Business mogul Donald Trump warned those gathered at this week's Conservative Political Action Conference that the Republican Party is in serious trouble.

"When you spend $400 million on a campaign and you lose, you know there's a problem," he said.

Trump dismissed his critics who have called him a lightweight and a side show.

Before Trump took the CPAC stage, he spoke exclusively to CBN News's David Brody about the GOP's future. You can watch more of the interview with Trump, along with an interview with Texas Gov. Rick Perry, on The Brody File.