We were like a Third World country on election night, ' Trump said in the interview.
The former president's son-Donald Trump Jr. -will speak as well.
Trump already has a lot of ammunition with which to target Joe Biden, who has been busy the last month dismantling numerous former president's policies.
Last year's CPAC was briefly interrupted by comedian Sacha Baron Cohen, who attended the conference dressed as Trump while filming his movie, Borat Subsequent Moviefilm.
A number of top Republicans who are considered possible candidates for the party's 2024 presidential nomination are also due to speak at CPAC, including Trump's secretary of state, Mike Pompeo, and Kristi Noem, the governor of South Dakota. But Romney became a persona non grata after his criticism of Trump during his first Senate impeachment trial in 2020, in which the Utah Republican voted with Democrats to convict the former president.
Trump was impeached a second time on January 13, a week after the insurrection.
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"We accept Joe Biden is the duly elected president of the United States", former Pence chief of staff Marc Short told CNN's Pamela Brown on "Newsroom" Saturday evening, despite Pence playing a role in perpetuating baseless election fraud theories that Trump repeatedly pushed ahead of the attack on the Capitol.
After spending two months falsely claiming his election loss was the result of widespread fraud, Trump was acquitted in an impeachment trial held in the Senate after he left office.
Trump and McConnell parted ways in the weeks after the November election, with Trump irked that the Kentucky Republican had recognized Biden as the victor in mid-December. McConnell condemned Trump's actions, suggesting that he should be prosecuted through the criminal justice system.
Trump called McConnell "a dour, sullen, and unsmiling political hack" and warned that if Republican senators stayed with him "they will not win again". The former president also now appears as the featured speaker on the conference's website. A poll conducted earlier this month by CBS News/YouGov showed that 70 percent of GOP voters would join or consider joining a new political party if Trump formed one.
Small numbers of asylum seekers, a lot of them Central Americans forced to wait in Mexico under Trump, have also begun crossing into the United States as their cases are being processed.
Newsweek reached out to CPAC's press representatives for comment but did not immediately receive a response.