Trump concludes MSG rally with anti-immigrant rhetoric

While Trump started his speech with "a message of hope," he quickly went into his usual stump speech, disparaging immigrants and emphasizing a campaign promise to enact mass deportations on "Day 1."

"On Day 1, I will launch the largest deportation program in American history to get the criminals out. I will rescue every city and town that has been invaded and conquered, and we will put these vicious and bloodthirsty criminals in jail. They kick them the hell out of our country as fast as possible," Trump said.

Trump then promised to deliver the death penalty for migrants who kill Americans or police officers.

"I'm here by calling for the death penalty for any migrant that kills an American citizen or law enforcement officer," Trump said.

Calling on supporters to turn out on Election Day, Trump said, "With your help, from now until Election Day, we will restore America's promise. We will put America first, and we will take back the nation that we all love."

-ABC News' Lalee Ibssa

While speaking to his crowd of supporters at Madison Square Garden Sunday, former President Donald Trump suggested a bill be created to punish anyone who burns an American flag with a year in jail.

"I would like to suggest that we put in a bill that if you burn the American flag -- one year in jail," Trump said.

Flag burning is not illegal in the U.S. because it is protected by the First Amendment as a form of symbolic speech.

Former President Donald Trump renewed his previous comments suggesting political opponents are a threat to the U.S., calling them "enemies from within."

"When I say 'the enemy within,' the other side goes crazy," Trump said Sunday on the Madison Square Garden stage. "They have done very bad things, they are indeed the enemy from within," he said.

Trump previously floated the rhetoric during an appearance on Fox News earlier this month.

"I think the bigger problem are the people from within," Trump told Fox News anchor Maria Bartiromo, claiming Democrats are more of a threat to the 2024 presidential election than top foreign adversaries such as China and Russia.

"We have some very bad people. We have some sick people, radical left lunatics," Trump said at the time.

Trump suggested deploying the military against them on American soil, arguing without proof they would be more likely to sow chaos on Nov. 5 than his supporters -- despite what transpired on Jan. 6, 2021.

"I think it should be very easily handled by, if necessary, by National Guard, or if really necessary, by the military, because they can't let that happen," Trump told Bartiromo.

During his campaign rally at Madison Square Garden on Sunday, former President Donald Trump attacked FEMA and the Biden-Harris administration's hurricane response.

He called their response to Hurricane Helene "egregious" and "the worst response in North Carolina and other states since Katrina."

"They haven't even responded in North Carolina. There's nobody, they don't see any FEMA," Trump falsely claimed about the Federal Emergency Management Agency.

Turning his attention to illegal immigration, the former president again repeated falsehoods about Springfield, Ohio.

"You take a look at Springfield, Ohio," he said, "... where 30,000 illegal migrants were put into a town of 50,000 people."