A new executive order from the White House will aim to make federal research funding for colleges and universities contingent on their support for “free speech,” President Trump said Saturday.

The announcement, during Trump’s address to the Conservative Political Action Conference, appeared to target complaints by some university critics that institutions of higher education stifle right-wing viewpoints.

“If they want our dollars, and we give it to them by the billions, they’ve got to allow people like Hayden and many great young people, and old people, to speak,” Trump said, bringing onstage a young conservative, Hayden Williams, who was physically attacked last month while tabling for a conservative organization at the University of California at Berkeley.

The executive order, Trump said, would “require colleges to support free speech if they want federal research” money. The White House did not immediately respond to a request for comment.