Trump vows to issue a flurry of executive orders on his first day as president.

Watch: Trump promises 'brand new day' at pre-inauguration rally

Just hours before taking the oath of office, Donald Trump pledged to sign numerous executive orders on his first day as president during a celebratory rally in Washington, DC.

Addressing thousands of supporters at the "Make America Great Again Victory Rally" on the eve of his inauguration, Trump previewed his upcoming presidency while relishing his electoral triumph over the Democrats.

The Republican leader promised to tackle a wide range of issues using executive authority, vowing to initiate deportations and roll back environmental regulations.

"I will act with unprecedented speed and decisiveness to resolve every crisis this country faces," he assured the crowd.

He added, "Tomorrow will be a spectacle. Every radical and absurd executive order from the Biden administration will be undone within hours of my swearing-in."

Trump outlined plans to issue orders advancing artificial intelligence, establishing the Department of Government Efficiency (DOGE), declassifying records related to presidential assassinations, directing the military to develop the Iron Dome defense system, and eradicating diversity, equity, and inclusion policies from the armed forces.

Reports suggest Trump might enact over 200 executive actions on Monday. Unlike executive orders, which are legally binding and published in the Federal Register, executive actions are less formal, lack legal weight, and act as a statement of policy intent, as noted by political analyst Tom Murse.

Donald Trump energized his supporters at a rally in Washington, DC, just hours before his inauguration, promising executive orders aimed at addressing illegal immigration, repealing left-leaning policies, and tackling issues like crime and transgender athletes in sports. "You're going to see executive orders that will make you extremely happy," Trump declared. "We must steer our country in the right direction."

Some of these orders are expected to face legal challenges, especially his pledge to launch what he called the largest deportation operation in history. Experts warn such an effort could encounter logistical obstacles and cost tens of billions of dollars.

Trump also took credit for the restoration of TikTok, which had been briefly banned, and a Middle East ceasefire deal—despite it being brokered days earlier under the Biden administration.

The "Make America Great Again Victory Rally" at the Capital One Arena, which holds 20,000 attendees, featured performances by Kid Rock and Lee Greenwood, along with speeches by Megyn Kelly, Jon Voight, and Elon Musk. Musk is slated to co-lead the newly announced Department of Government Efficiency (DOGE).

Trump described his upcoming swearing-in ceremony as the end of "four long years of American decline" and the start of "a new day of strength, prosperity, and pride." The inauguration, relocated to the Capitol Rotunda due to harsh weather, will include an invocation by Franklin Graham and an inaugural address focusing on unity, strength, and fairness.

Trump's family and supporters, braving freezing temperatures, filled the city with red MAGA hats and campaign gear, signaling their enthusiasm for the next chapter of his presidency.