The former president addressed the conservative gathering in Orlando on Sunday afternoon, in his first speech since stepping down on January 20, The Daily Mail reported.

Trump took to the stage to rapturous applause, using his podium to attack President Joe Biden and tease his supporters with numerous hints of a 2024 run.

He also sought revenge on the 17 Republicans - seven senators and 10 members of the House - who voted to impeach him.

"Instead of attacking me and more importantly the voters of our movement, top establishment Republicans in Washington should be spending their energy in opposing Biden, [Nancy] Pelosi, [Chuck] Schumer and the Democrats," Trump said. 

"If Republicans do not stick together, the RINOs [Republicans In Name Only] that we're surrounded with will destroy the Republican Party," he added. 

He later took aim at Senate Minority Leader Mitch McConnell, who criticized Trump over his actions around the riot and accused Trump of "a disgraceful dereliction of duty".

"Now more than ever is the time for tough, strong and energetic Republican leaders who have spines of steel," Trump continued.

Trump promised a "triumphant return to the White House" in his grand comeback at CPAC where he laid into the Supreme Court for not having the "courage" to overturn the "rigged election".

"This election was rigged. And the Supreme Court and other courts didn't want to do anything about it," he lamented, adding, "They didn't have the courage, the Supreme Court."

"We had almost 20 states go into the Supreme Court so that we didn't have a standing problem. They rejected it, they rejected it," Trump said of the dozens of lawsuits filed in an attempt to toss out ballots they believe were invalid.

Trump also attacked Biden as being an "America last" president, stating Biden had had "the most disastrous first month of any president in modern history".