Let's make two years of community college as free and universal as high school is today. Watch this message from President Obama, and join the movement at http://HeadsUpAmerica.us/act.

Posted by The White House on Wednesday, September 9, 2015

Louis C.K. and Chris Rock are getting serious about one of President Obama’s top causes.

The comedians are teaming up with other celebrities on a campaign, titled Heads Up America, promoting Obama’s free community college initiative.

The White House released a brief public service announcement on Wednesday featuring Louis C.K., Rock, comic actor and former Obama staffer Kal Penn and actress Amandla Stenberg.

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Obama also appears in a separate 90-second video plugging his plan, which would offer free community college tuition to more than 9 million Americans.

“A higher education shouldn’t mean taking on a lifetime of debt,” he says. “It’s hard to get ahead when you start so far behind. That’s why I want to make two years of community college education free for responsible students.”

The videos are part of a multiday effort by the White House to sell the program, which is stalled in Congress.

Obama is traveling to Warren, Mich., with Vice President Biden's wife, Jill Biden, a community college professor, to promote the plan. He will travel to the early-voting state of Iowa next Monday.

Republican lawmakers have balked at the cost of the $60 billion proposal, which Obama unveiled in his State of the Union address.