WASHINGTON -- Republican presidential candidate Donald Trump vowed Monday to impose a broad ban on immigration from areas of the world where terrorism is prevalent and suggested that some Muslims in the United States are turning a blind eye to unfolding plots, as he outlined an aggressive response to the deadly attack in Orlando, Fla.

Hillary Clinton, the front-runner for the Democratic nomination, was more measured in her remarks, warning that demonizing all Muslims for the actions of a few would only benefit extremist groups. She also called for tougher gun-control legislation in the U.S., including outlawing assault-style weapons such as the one used by the Orlando shooter.

"I believe weapons of war have no place on our streets," Clinton said.

The two candidates issued their plans to target terrorism a day after a U.S. citizen born in New York to Afghan immigrants, declaring his allegiance to the Islamic State, killed 49 people and wounded 53 at a gay nightclub in Orlando.

Clinton said Trump's immigration proposals and rhetoric regarding Islam would only make it more difficult for law enforcement to work with Muslim communities.

"Inflammatory anti-Muslim rhetoric and threatening to ban the families and friends of Muslim Americans, as well as millions of Muslim business people and tourists from entering our country, hurts the vast majority of Muslims who love freedom and hate terror," she said.

Trump called for sweeping changes to the nation's immigration rules as the cornerstone of his anti-terrorism plan.

Speaking Monday afternoon at St. Anselm College in Goffstown, N.H., he redoubled his previous call for a temporary ban on Muslims coming to the U.S., saying that policy would stay in place until the government can "properly and perfectly" screen immigrants. He also said he would use presidential discretion to "suspend immigration from areas of the world where there's a proven history of terrorism against the United States, Europe and our allies."

The businessman did not specify what countries would be affected or whether the suspension would apply regardless of religion. Trump's campaign did not respond to multiple requests to clarify whether his new language would replace the proposed Muslim ban and whether it would apply to potential immigrants from countries like Ireland, Israel and Belgium that have faced attacks.

Trump pledged to protect all Americans "wherever they come from, wherever they were born." But he repeatedly referred to Muslims in a negative context.

Though the Orlando shooter -- 29-year-old Omar Mateen -- was born in the United States, Trump noted that he was "born to Afghan parents who immigrated to the United States." He said Muslim communities must turn over to law enforcement "people who they know are bad," adding, "they do know where they are."

He also said gays are often discriminated against in the Muslim world, and he said Clinton could not claim to be an ally of the lesbian, gay, bisexual and transgender community if she supports immigration from such countries.

"Ask yourself, who is really the friend of women and the LGBT community: Donald Trump with actions or Hillary Clinton with her words?" Trump said. However, he also has said he opposes gay marriage -- the official position of the Republican Party -- while Clinton and Democrats back same-sex unions.

Trump said that under Obama's leadership, things will only get worse. He tied the Obama administration's immigration policies to Clinton, who served as secretary of state during Obama's first term.

"The burden is on Hillary Clinton to tell us why she believes that immigration from these dangerous countries should be increased without any effective system ... to screen," Trump said.

lone-wolf attackers

Clinton overhauled her Monday schedule to refocus on national security in light of the Orlando attack. An event that was supposed to mark the start of the general-election campaign in battleground Cleveland was transformed into a reflection on the need for patriotism, unity and an effective strategy to combat the Islamic State group and its sympathizers.

Clinton also postponed two fundraising events that had been scheduled for Monday in Ohio.

At the Cleveland Industrial Innovation Center, Clinton laid out her anti-terrorism plan, which builds on Obama's campaign against the Islamic State in Iraq and Syria and expands on his gun-control executive orders.

Clinton said her plan would center on identifying "lone-wolf" attackers -- those who may be radicalized but not connected to a broader network or carrying out plans on behalf of any group. Obama said Monday that the Orlando attacker appeared to fall into that category.

"The attack in Orlando makes it even more clear: We cannot contain this threat; we must defeat it," Clinton said. "As president, I will make identifying and stopping lone wolves a top priority."

She said local and state law enforcement agencies must be given better, more timely intelligence on potential terrorist threats. She also called for stronger gun-control laws that would prevent suspected extremists from gaining access to weapons.

Clinton's call for tougher gun-control measures has been a centerpiece of her presidential campaign. In addition to her support for a ban on assault-style weapons, she also said Americans should be able to agree that "if the FBI is watching you for a suspected terrorist link, you shouldn't be able to just go buy a gun with no questions asked."

"And yes, if you're too dangerous to get on a plane, you are too dangerous to buy a gun in America," she continued.

The FBI said Mateen had twice come to its attention, but the investigations did not reveal any definitive links to terror groups or plots. Mateen purchased at least two firearms legally within the past week or so, according to federal authorities.

Clinton also accused countries in the Middle East, including Saudi Arabia and Qatar, of funding and fueling terrorism through their support of radical schools and mosques.

"We and our allies must work hand in hand to dismantle the networks that move money and propaganda and arms and fighters across the world," Clinton said.

Clinton did not mention Trump by name in her Cleveland speech, but in several television interviews Monday, Clinton accused Trump of "demagoguery," adding that he has not offered tangible solutions to terrorism.

"I'm not going to demonize and demagogue and declare war on an entire religion. That's just plain dangerous, and it plays into ISIS' hands," she said on NBC Monday morning, using an acronym to refer to the Islamic State.

Trump issued a direct response Monday during his speech: "She has no clue, in my opinion, what radical Islam is, and she won't speak honestly about it if she does in fact know. She's in total denial."

Trump said earlier in the day that he believed that calls for gun-control legislation in the wake of the Orlando shooting would be a mistake.

"If you had some guns in that club the night that this took place ... you wouldn't have had the tragedy that you had," Trump said on CNN Monday morning.

Information for this article was contributed by Julie Pace, Jill Colvin, Lisa Lerer, Jon Lemire and Eric Tucker of The Associated Press; by Amy Chozick and Alan Rappeport of The New York Times; and by Abby Phillip and Jose A. DelReal of The Washington Post.

A Section on 06/14/2016