President Donald Trump on Thursday rolled out the broad outline of a health-care plan that the White House claims will lower drug prices and insurance premiums.

The announcement came as a congressional effort to extend key Affordable Care Act tax credits faces headwinds from Senate Republicans, leaving millions at risk of seeing their health insurance premiums spike.

The Trump administration dubbed the initiative “The Great Healthcare Plan,” the president said in a video unveiling the policy Thursday morning.

“I’m calling on Congress to pass this framework into law without delay,” Trump said. “Have to do it right now.”

The plan would codify the deals Trump recently struck with major drugmakers to slash the cost of certain prescription drugs in the U.S. by pegging them to lower prices abroad, as part of his “most-favored-nation” policy.