Twenty-three million families will either have to pay more for internet or cancel their subscriptions altogether if a federal subsidy program to help with the monthly bill runs out of money.

President Joe Biden recently traveled to North Carolina to promote his goal of affordable internet access for all Americans, but the promise for 23 million families across the U.S. is on shaky ground.

That’s because a subsidy that helps people with limited resources afford internet access is set to expire this spring.

The Affordable Connectivity Program (ACP), which provides $30 a month for qualifying families in most places and $75 on tribal lands, will run out of money by the end of April if Congress doesn’t extend it further.

“I think this should be high priority for Congress,” North Carolina Governor Roy Cooper, a Democrat who has worked with a bipartisan group of governors to promote the program, said in a phone interview. “To many families, $30 a month is a big deal.”