Sen. Charles E. Schumer (D-N.Y.) calls on a reporter during a news conference Wednesday. (Andrew Harnik/AP)

President Trump and some of his allies on the far right have found a new culprit in Tuesday’s deadly terrorist attack in Manhattan: Senate Minority Leader Charles E. Schumer (D-N.Y.).

As details emerged about the incident, prominent right-wing commentators and news outlets seized on a report from New York’s ABC affiliate that the alleged attacker, Sayfullo Saipov, had come to the United States from Uzbekistan under a State Department program known as the Diversity Visa Lottery.

Long before government officials publicly confirmed the ABC report, Trump slammed the visa lottery and said he’ll ask Congress “to immediately initiate work to get rid of this program.”

“I am today starting the process of terminating the diversity lottery program,” Trump told reporters before a midday Cabinet meeting, adding: “It sounds nice. It’s not nice. It’s not good.”

The president on Wednesday also criticized Schumer, who in 1990 introduced the House bill that helped create the visa program.

Years later, in 2013, the New York Democrat was among a bipartisan group of lawmakers who sought to end the program. But he is still being assailed by Trump and other conservatives.

The Department of Homeland Security confirmed on Wednesday afternoon “that the individual identified in the New York City terror attack was admitted to the U.S. upon presentation of a passport with a valid diversity immigrant visa.” A DHS spokesman, who did not mention Saipov by name, said the suspect entered the United States in 2010.

In news interviews, blog posts and tweets, conservatives blamed the Democrat, saying he was responsible for allowing the 29-year-old man’s entry into the country.

Trump joined the criticism early Wednesday, hours before declaring that he would ask Congress to terminate the program.

The terrorist came into our country through what is called the “Diversity Visa Lottery Program,” a Chuck Schumer beauty. I want merit based.

— Donald J. Trump (@realDonaldTrump) November 1, 2017

We are fighting hard for Merit Based immigration, no more Democrat Lottery Systems. We must get MUCH tougher (and smarter). @foxandfriends

— Donald J. Trump (@realDonaldTrump) November 1, 2017

“Senator Chuck Schumer helping to import Europes problems” said Col.Tony Shaffer. We will stop this craziness! @foxandfriends

— Donald J. Trump (@realDonaldTrump) November 1, 2017

Schumer, in response to Trump’s tweets, said, “I guess it’s not too soon to politicize a tragedy.”

In 2013, Schumer was part of the Senate’s “Gang of Eight” group that came up with a sweeping bipartisan proposal to revamp U.S. immigration laws. Among other things, that proposal called for eliminating the diversity lottery.

Sen. Jeff Flake (R-Ariz.), another member of the Gang of Eight, defended Schumer, recalling that the group had tried to end the program.

Actually, the Gang of 8, including @SenSchumer, did away with the Diversity Visa Program as part of broader reforms. I know, I was there https://t.co/QQFJzPyRzC

— Jeff Flake (@JeffFlake) November 1, 2017

In fact, had the Senate Gang of 8 bill passed the House, it would have ended the Visa Lottery Program AND increased merit based visas. https://t.co/o3qJHHAv1C

— Jeff Flake (@JeffFlake) November 1, 2017

The bill passed the Senate but died in the House.

[Five old friends from Argentina reunited in New York. They died together in a terrorist attack.]

In a statement, and later at the Capitol, Schumer criticized Trump for proposed budget cuts to counterterrorism programs.

“I have always believed and continue to believe that immigration is good for America,” his statement read. “President Trump, instead of politicizing and dividing America, which he always seems to do at times of national tragedy, should be focusing on the real solution — anti-terrorism funding — which he proposed cutting in his most recent budget.

“I’m calling on the President to immediately rescind his proposed cuts to this vital anti-terrorism funding.”

Doing so, Schumer said, would help the New York Police Department and other law enforcement agencies across the country.

The midyear budget proposal from Trump called for cutting more than half a billion dollars from “critical counterterrorism programs” administered by the DHS, according to a congressional report.

That report, released in July, said the proposed budget would increase DHS funding by 7 percent while “numerous critical programs that mitigate terror threats are cut dramatically,” including programs aimed at targeting violent extremism, responding to terrorist attacks and patrolling U.S. airports.

The report was written by the Democratic staff of the Senate Committee on Homeland Security and Governmental Affairs at the request of Sen. Claire McCaskill (D-Mo.), the ranking Democrat on the committee.

[Diversity Visa Lottery, criticized after New York terrorist attack, was invented to help the Irish]

Many conservatives blame terrorism and violent crime on the nation’s immigration laws. It’s how Trump has justified his travel ban, which has met with resistance from the courts.

After a labor policy event at the Capitol, Schumer declared, “The terrorists can’t divide us.”

He declined to discuss the specifics of the diversity lottery program at the time because some details, including how the suspect entered the United States, were still unclear. Schumer said that he did not speak with Trump after Tuesday’s attack and that he was offered “nothing” — no briefing by the White House on the situation.

Instead, he had to call the deputy director of the FBI on Tuesday to get updates.

The diversity visa program has been a target of many conservatives for years, with Trump supporting legislation to eliminate it in favor of a “merit-based” immigration system. The New York attack suspect’s ties to the diversity visa lottery provided an opportunity to push that immigration-law agenda and bash Schumer.

Manhattan Terrorist Sayfullo Saipov Entered US On Chuck Schumer’s ‘Diversity Visa’ Program https://t.co/LJ3vhex4u6 pic.twitter.com/rhsv5sNDGU

— Chuck Woolery (@chuckwoolery) November 1, 2017

It also appeared to play well on the Internet with some Trump boosters who recoil at the word “diversity” as part of a politically correct liberal lexicon.

“I’m sick and tired of seeing men, women and children being sacrificed to the liberals’ false deity of diversity, while we all get invaded,” said one Twitter user, echoing a theme that coursed through the Internet overnight.

The diversity visa program has been around for more than 20 years, offering a limited number of visas to people from parts of the world that have relatively few immigrants in the United States.

Schumer did play a key role in drawing up the program in 1990. His proposals eventually became part of a broader immigration package that was passed by Congress in a bipartisan vote and signed into law by a Republican president, George H.W Bush.

For Sebastian Gorka, a former aide to Trump known for his anti-immigration views, that was enough to connect the minority leader to Saipov, who is accused of plowing a truck into people on a bike path, killing eight.

He “won” his visa under the Diversity Lottery program introduced by none other than @SenSchumer. https://t.co/ib3iEHMa3M

— Sebastian Gorka DrG (@SebGorka) November 1, 2017

Speaking with Sean Hannity on Fox News, conservative radio host Mark Levin gave a similar assessment.

“You know who the sponsor was? Chuck Schumer,” he said, to which Hannity responded, “Good grief.”

“This diversity visa program should be gutted,” Levin said. “The purpose of immigration, historically, is to improve the United States, is to benefit the United States, not to ensure diversity from the foreigners coming into this country, not to ensure that certain countries are well represented.”

[Trump’s New York attack response fits his pattern after a crisis: Cast blame and get political]

Breitbart wrote that Schumer had “created” the program, and it referred to the visas as “Schumer visas.”

“One of the Schumer-visa winners was Sayfulloh Saipov,” read Breitbart’s article.

By early Wednesday, “Diversity Visa” was trending on Twitter. Some users shared graphic illustrations of a pair of hands with blood dripping from them. “You have blood on your hands Chuck,” one tweet read.

Congress approved the Diversity Visa Lottery, also known as the green-card lottery, as part of the Immigration Act of 1990, but it didn’t take effect until 1995.

Under the program, the State Department offers 50,000 visas each year to immigrants from parts of the world with relatively low immigration rates over the previous five years. Most visas go to people from African nations, as The Washington Post has reported.

To qualify, applicants must have a high school education or two years in an occupation that requires formal training. Those who meet eligibility requirements are selected at random from a computer lottery. The State Department refers to them as “diversity immigrants.”

The program did originate in part in a bill introduced in 1990 by Schumer, who was then a member of the House. He proposed making a set number of visas available each year to “diversity immigrants” from “low-admission” countries.

Schumer’s measure was absorbed into a broader House immigration bill, which was sponsored by Schumer and 31 others, including several Republicans. The legislation passed in a bipartisan vote of 231 to 192. The Senate version, which contained the “diversity immigrants” provision, passed in an overwhelming 89-to-8 vote and was signed into law by Bush at the end of 1990.

For the past decade or so, political leaders have debated whether to keep issuing diversity visas.

A Congressional Research Service report from 2011 noted that some lawmakers and government officials had raised concerns about the program, suggesting that there were national security reasons to eliminate it. The report mentioned one case in which an Egyptian immigrant whose spouse was a diversity immigrant fatally shot two people at Los Angeles International Airport. It also cited disagreement over the reliability of background checks in countries that qualified at the time for the diversity lottery.

The Government Accountability Office reviewed the program in 2007 and found no documented evidence that diversity immigrants posed a terrorist threat, but it concluded that the program was vulnerable to fraud. The State Department under President George W. Bush rejected the agency’s recommendations, contending that its fraud-screening program was robust.

Trump said earlier this year that he supported legislation to eliminate diversity visas. The Reforming American Immigration for Strong Employment (Raise) Act in the Senate would scrap the program and introduce a “merit-based” immigration system prioritizing foreigners with job skills, English abilities and higher education.

Black lawmakers and civil rights advocates have argued against ending diversity visas, as the Hill has reported. Doing so, they say, would take away an important pathway for African and Caribbean immigrants to lawfully enter the United States.

[‘Just keep living’: New York’s flippant resilience on display for Halloween after terrorist attack]

The Uzbek immigrant community in the United States is small, numbering in the tens of thousands, and few Uzbek immigrants enter the country each year, making Uzbekistan a prime candidate for the diversity visa program. The U.S. Embassy in Uzbekistan advertises diversity visas on its website. By comparison, nearly 170,000 people immigrated to the United States from India in 2015, along with 143,200 from China and 139,400 from Mexico, according to figures from the Migration Policy Institute. As a result, those countries do not qualify for diversity visas.

At the Capitol on Wednesday, Schumer blasted Trump’s response to the attack.

“This is a tragedy,” Schumer said. “It’s less than a day after it occurred, and he can’t refrain from his nasty, divisive habits. He ought to lead.”

The Democrat said he hoped his most recent spat with the president wouldn’t affect attempts to resolve disputes over how to address the legal status of hundreds of thousands of young “dreamers,” or undocumented immigrants who were brought into the country as children.

“I have always believed in immigration as good for America — so do the vast majority of Americans. I stand by that today,” Schumer said. “It’s a good thing for America. Whether President Trump believes that or not, we don’t know, because some days he’s very anti-immigrant, and then he calls Leader Pelosi and I to the White House and says, ‘Let’s help the dreamers.’ ”

Schumer said he last spoke with the president “two or three weeks ago.”

Ed O’Keefe and Mark Berman contributed to this post, which has been updated.

NEW YORK — Authorities said Wednesday that the 29-year-old man accused of mowing down pedestrians and cyclists on a Manhattan bike path, killing eight people, plotted for weeks before carrying out the attack in the name of the Islamic State.

Officials identified the suspected attacker as Sayfullo Saipov, a legal permanent resident of the United States who arrived in the country from Uzbekistan in 2010 through a diversity visa program. They said Saipov was influenced by the Islamic State, also known as ISIS, and its violent tactics after coming to the United States.

Saipov left notes pledging his allegiance to the group, authorities said, though they have not identified any direct connections between Saipov and the organization.

[ Five old friends from Argentina reunited in New York. They died together in a terrorist attack. ]

These notes, which included symbols and words, were handwritten in Arabic essentially said “that the Islamic State would endure forever,” John Miller, the deputy New York police commissioner for intelligence and counterterrorism, said at a briefing on Wednesday. The Islamic State has urged its followers to use vehicles to carry out attacks.

“He did this in the name of ISIS,” Miller said. “He appears to have followed almost exactly to a T the instructions that ISIS has put out in its social media channels before with instructions to their followers on how to carry out such an attack.”

The new details came as authorities continued to explore the violent rampage that tore through a stretch of Lower Manhattan and became New York’s deadliest terrorist attack since Sept. 11, 2001.

Police say Saipov climbed into a rental truck on Tuesday afternoon and careened down a bike path along the Hudson River, slamming into numerous people before he was wounded by police and taken into custody. He drove southbound on the path “at a high rate of speed” and appeared to specifically target cyclists and pedestrians, Miller said.

Six people were pronounced dead at the scene and two more at area hospitals. Among the dead were five Argentines gathered for a reunion and one Belgian, while the two Americans were from New York City and New Jersey.

The victims of the rampage included seven men and one woman; they ranged in ages from 23 to 48. Twelve more people were injured, some critically, during the carnage. Nine of the injured remained hospitalized on Wednesday, according to Daniel A. Nigro, the New York fire commissioner.

Police on Wednesday offered their first timeline of the attack. Saipov rented a large Home Depot truck in New Jersey at 2:06 p.m. on Tuesday, they said. Using license plate readers and cameras, police tracked his travels into Manhattan and onto the West Side Highway.

He drove onto the bike path at 3:04 p.m., police said. The rampage down the path continued until he collided with a school bus, injuring still more people, at which point he emerged from the truck, according to the police narrative. A stream of 911 calls soon came in reporting the injuries, the bus accident and a man with a gun in the street.

Officer Ryan Nash, at a nearby school for an unrelated call, approached Saipov and shot him in the abdomen. The weapons Saipov were brandishing turned out to be a pellet gun and a paintball gun, police said. Officials praised Nash for his heroism in stopping Saipov, with Mayor Bill de Blasio (D) calling his actions “extraordinary.”

[ How the attack unfolded ]

The violent route, which remained a crime scene on Wednesday, was strewn with bodies, wreckage and scattered personal items such as purses, backpacks and shoes, resembling the scenes witnessed in Berlin, London, Barcelona and other places where vehicles have been used for attacks.

Investigators have spoken to Saipov, who remained hospitalized Wednesday, but officials declined to publicly reveal what he said. They also continued to scour his background and life for clues, an effort that included carrying out search warrants and interviewing people who knew him.

Saipov, a legal permanent resident of the United States, came to the country in March 2010 and had lived in Florida, Ohio and New Jersey, according to authorities. He had been an Uber driver without any worrisome safety reports, the app said, and was banned after the attack.

He had never been the subject of an FBI investigation or a New York police intelligence investigation, Miller said. However, Saipov had been known to authorities. According to a law enforcement official familiar with the current investigation, Saipov’s name surfaced during an earlier Homeland Security probe into some of his friends.

[ New York attack suspect puts focus on Central Asia’s battle with extremism ]

Video from the scene of the attack appeared to capture Saipov jumping out of the wrecked vehicle brandishing what appeared to be handguns. Some witnesses said he shouted “Allahu akbar,’’ meaning “God is great’’ in Arabic.

The Islamic State did not immediately claim responsibility for the New York attack, though its supporters cheered what happened, according to the SITE Intelligence Group, which monitors extremist activity. The militant group frequently takes credit for attacks, doing so in some cases where there is little clear indication of its involvement.

The attack may inflame the political debate over immigration and security. President Trump called Saipov an “animal” and said he was considering sending him to Guantanamo Bay.

During remarks Wednesday, Trump called the criminal justice system’s handling of suspects “a joke” and suggested it was too slow and weak, remarks he made just weeks after federal prosecutors secured the conviction of a New Jersey man who last year planted bombs in Manhattan during another attack.

On Wednesday, Trump tweeted critically about Sen. Charles E. Schumer (D-N.Y.), saying that Saipov had entered the country through a diversity visa lottery program he blamed on the senator. Trump pledged to get rid of that program, seizing on it and Schumer as political targets.

After Trump repeatedly criticized the visa program, a Department of Homeland Security spokesman confirmed Saipov came to the United States with a diversity immigrant visa.

Trump has argued for stricter screening of immigrants, which he said is needed to prevent terrorism, while opponents of his policies have repeatedly gone to court to block his efforts. Uzbekistan was not among the countries named in any version of the president’s travel ban, which largely targeted a number of majority-Muslim countries and would not have kept out anyone behind deadly terrorist attacks in the United States.

[ Experts see potential shift toward cruder, deadlier acts of terror ]

Cuomo and de Blasio said Wednesday morning that Trump had not called either of them. The men said they were not bothered because two senior Trump administration officials called them, but they also both expressed umbrage at what they described as attempts to politicize the attack.

“The president’s tweets I think were not helpful,” Cuomo said at the briefing Wednesday. “I don’t think they were factual. I think they tended to point fingers and politicize the situation.”

In the aftermath of the attack, throngs of New Yorkers went out to celebrate Halloween, with many attending the city’s annual parade, which officials extolled as a show of the city’s resilience. Police also said New Yorkers would see a beefed-up law enforcement presence in the coming days.

Cuomo, who described the truck attack as a “failed” effort to scare and terrorize people, reiterated that he felt like responses such as Trump’s were not the right way to react.

“You play into the hands of the terrorists to the extent you disrupt and divide and frighten people in this society,” he said.

As the sun rose over New York on Wednesday, the bike path remained blocked off by police tape between Houston and Chambers streets. Dozens of police officers guarded the perimeter while crime scene investigators wearing white suits slowly searched the length of the path.

At the bike path in New york, two men holding coffee cups approached the line police tape early Wednesday.

“I don’t see what happened,” one said.

“You don’t know what happened? Yesterday. Someone drive a truck into people,” the other said.

“Did people die?”

“Yeah,” said the man. “People died.”

Barrett and Berman reported from Washington. Sarah Kaplan and Monica Hesse in New York and Brian Murphy, Julie Tate and Jennifer Jenkins in Washington contributed to this report.