Next weekend, former US President Donald Trump will deliver his first speech since leaving the White House on Jan. 20.

The speech, expected on Feb. 28 in Orlando, Florida, comes within the framework of the "Conservative Political Action Conference," the largest annual gathering of American conservatives, according to what people close to him said Saturday.

Trump will talk about "the future of the Republican Party and the conservative movement," according to AFP.

The former president is also expected to talk about immigration and the "catastrophic policies" of his successor, Joe Biden.

The former US president was recently acquitted in his second impeachment trial before the Senate. The House of Representatives accused him of 'inciting insurrection' in the deadly Jan. 6 attacks on the Capitol, but the Senate did not reach the requried two-third majority to convict him. 

Trump remains a powerful force in American politics. Three-quarters of Republicans want Trump to play a prominent role in the party, according to a poll conducted by Quinnipiac University this week.

Trump is trying his best to be the center of everyone's attention. Since reluctantly leaving the White House on Jan. 20, he has made little public appearances. But he took advantage of the death of right-wing journalist Rush Limbaugh by calling Fox News to repeat his claim that he was wrongly denied victory in the Nov. 3 elections.

"Rush thought we won and so did I, by the way. I think we won a lot," Trump said.

Usually past presidents are hidden from view, but the case of Trump looks different, which raises questions over the way Biden will deal with the prospect of a former president with a vengeance.

Trump ignited the political scene on Tuesday with criticism of prominent Republican Senator Mitch McConnell. McConnell had attacked Trump in a speech after he helped clear the former president in his impeachment trial.

McConnell did not join the seven rebel Republicans who voted with the Democrats to condemn Trump for fomenting the revolt in Congress on Jan. 6.

But shortly after the vote, McConnell blamed the former president for "disgraceful shortcomings in his duty," stressing that the protesters who attacked Congress "were carrying banners ... and they pledged their loyalty to him."

In response, a statement from Trump said, "Mitch is a botched politician who is not smiling, gloomy and sullen."

Also read: The US Senate acquits Trump after a landmark trial