Acting White House Chief of Staff Mick Mulvaney slammed Democrats for refusing to applaud President Trump as he flatly rejected socialism in his State of the Union address.

“America was founded on liberty and independence and not government coercion, domination and control," Trump said to Republican applause. "We are born free and we will stay free.”

“Tonight, we renew our resolve that America will never be a socialist country,” he added as House Speaker Nancy Pelosi sat stone-faced behind him and many nonplussed Democrats appeared to shift uncomfortably in their seats.

The vow from Trump came as some Democrats voice support for a progressive agenda of "Medicare-for-all," free college tuition, higher taxes on the rich and a Green New Deal. 

In a "Hannity" exclusive, Mulvaney said he watched the Democrats in the House chamber as Trump declared that "America will never be a socialist country," and not a single one of them stood up.

Watters: Trump May Frustrate Far Left By 'Turning Socialism Into a Political Slur'

Judge Nap on Trump's Criticism of New Dem-Led Probes: 'Congress Can Investigate Whatever It Wants'

He cited the ongoing disaster in Venezuela -- which he called "a humanitarian tragedy of epic proportions" -- as an example of the damage that can be caused by socialist policies.

"All the Democrats are offering us has been put into place in Venezuela and look what’s happening," Mulvaney said. "People have lost 20 percent of their body weight in the last couple of years. It doesn’t work, it never has worked."

"One of the things that has always stunned me about socialists is that despite the fact that history is just littered with examples of how it doesn’t work and hurts people, they come out and say, 'Well they just didn’t do it right, if you give us the power to do it, if you elect us, we’ll be socialists and we’ll do it right this time.'"

Hannity added, "Until, of course, you run out of other people's money."

Watch the "Hannity" interview above.

WATCH: NM Gov Literally Runs Through Walls to Protest Trump

Mike Rowe on Trump's SOTU, Dems' Refusal to Stand: 'Dangerous' to Frame Everything as 'This or That'

Tomi Lahren: Abrams Stuck to Talking Points, Dems' Policy Specifics Are a 'Turnoff' to Voters