"By the time the sun sets tomorrow, the invasion of our country will have come to a halt," he said to cheers at a "Make America Great Again Victory Rally" at the Capital One Arena.

Trump repeated his campaign pledge to launch the largest deportation effort in US history, which would remove millions of immigrants. An operation of that scale, however, would likely take years and be hugely costly.

The rally resembled the free-wheeling campaign speeches that have been a Trump staple since his first serious White House run in 2016, with the former and future president delivering a mix of boasts, false claims and sweeping promises to the delight of the crowd.

"This is the greatest political movement in American history, and 75 days ago, we achieved the most epic political victory our country has ever seen," he said.

The event marked his first major address in Washington since his speech on Jan. 6, 2021, that preceded the storming of the U.S. Capitol by an angry mob of his supporters. Trump has said he will pardon many of the more than 1,500 people convicted or charged in connection with the attack.

Trump s rally, along with his inaugural address on Monday, could preview the tone he plans to adopt during his second White House term.

He vowed to repeal "every radical and foolish executive order of the Biden administration" within hours of assuming the presidency at noon ET (1700 GMT).

A source familiar with the planning said Trump will take more than 200 executive actions on Monday.

Border security will figure prominently in Trump s first executive orders, another source said, including classifying drug cartels as "foreign terrorist organizations," declaring an emergency at the U.S.-Mexico border and moving toward reinstatement of the "Remain in Mexico" policy that forces non-Mexican asylum seekers to wait in Mexico for their U.S. court dates.

Trump s deportation plans have unsettled immigrants subject to removal, including some who immigrant advocates say are law-abiding, long-term residents with U.S.-citizen spouses and children.

Trump said he would "get radical woke ideologies the hell out of our military" and order the military to construct a missile defense shield over the U.S., though he has yet to offer details on how to carry it out.

He also pledged to release classified documents relating to the assassinations of President John F. Kennedy in 1963 and his brother Senator Robert Kennedy and civil rights leader Martin Luther King Jr., both in 1968.