Donald Trump Jr. claimed on Tuesday that a deep-state conspiracy to undermine his father is stopping him from making his agenda a reality.

'There is, and there are, people at the highest levels of government that don't want to let America be America,' he told a group of young conservatives in West Palm Beach, Florida.

'My father talked about a rigged system throughout the campaign, and people were like, "Oh, what are you talking about?", he recalled.

'But it is. And you're seeing it.'

Donald Trump Jr. claimed on Tuesday that a deep-state conspiracy to undermine his father is stopping him from making his agenda a reality.

Trump Jr. was addressing the Turning Point USA Student Action Summit.

He also blasted special counsel Robert Mueller's investigation into alleged election-year collusion with Russian actors.

The president's son was referring to a blockbuster development this month that saw Mueller remove FBI agent Peter Strzok from his team.

Strzok exchanged anti-Trump text messages with his lover, suggesting that the Mueller probe was an 'insurance policy' against a Trump election victory.

Trump Jr. blasted special counsel Robert Mueller's investigation into alleged election-year collusion with Russian actors

'Imagine what would happen if we rolled back the clock to 2008,' Trump Jr. said, and politically biased FBI officials tried to undermine a potential Barack Obama presidency.

'What do you think would happen?' he asked. 'Do you think the media would cover that? Yeah. Do you think it would be brushed under the rug like, "Oh, it's nothing. It doesn't mean anything"?'

'There would be revolution in the streets. So I'm glad that this is coming out now, because it is good, because real people have to see this,' he said.

Trump Jr. said Strzok's 'insurance policy' was the discredited 'dossier' of salacious accusations against his father.

Strzok and senior FBI lawyer Lisa Page, who were having an affair, shared more than 10,000 texts in 2016 discussing the future president.

During their exchanges, they described Trump as an 'idiot' and a 'loathsome human' and shared their hopes that Hillary Clinton should win the election.