President Joe Biden attacked his opponent over Project 2025 during a Detroit campaign rally on Friday, despite former president Donald Trump’s attempts to distance himself from the high-profile conservative policy initiative.

Casting both Trump and Project 2025 as a “deadly serious” threat to American democracy, Biden tried to shift attention from his poor debate performance late last month and the political fallout that has since grown among Democratic lawmakers and media commentators who have called for his withdrawal from the race.

“Folks, Project 2025 is the biggest attack on our system of government and on our personal freedom that’s ever been proposed in the history of this country,” Biden said, describing the initiative as “a blueprint for a second Trump term.”

“Another four years of Donald Trump is deadly serious. Project 2025 is deadly serious,” he told more than 2,000 attendees at Renaissance High School in Detroit, Mich.

Project 2025 is a 900-page policy roadmap released by the Heritage Foundation for the next Republican administration to follow, ranging from guidelines for curbing illegal immigration to dissolving the Department of Education. Despite the president’s attacks, Trump disavowed the initiative twice in the past week.

“I know nothing about Project 2025,” he posted on Truth Social last Friday, adding that he disagrees with some of the policy proposals.

Trump doubled down on Thursday. “I have not seen it, have no idea who is in charge of it, and, unlike our very well received Republican Platform, had nothing to do with it,” he wrote on his own social-media platform. “The Radical Left Democrats are having a field day, however, trying to hook me into whatever policies are stated or said.”

The Democratic National Committee joined Biden in linking Trump to Project 2025 by launching an extensive billboard campaign covering ten cities in major battleground states, Axios first reported on Friday. Those cities are Raleigh, Charlotte, Philadelphia, Atlanta, Detroit, Lansing, Grand Rapids, Green Bay, Phoenix, and Las Vegas.

With the ad campaign, the DNC seeks to remind voters that Trump will become a dictator on “day one.” He made the comment in reference to closing the southern border and “drilling” should he return to the White House.

Meanwhile, Biden is facing intense pushback from his own party due to his old age and mental decline. Nearly 20 Democrats, most of which are in the House, have publicly called for the 81-year-old incumbent to step aside so far. As of Saturday, Senator Peter Welch (D., Vt.) is the sole Democratic member in the upper chamber of Congress urging Biden to drop his reelection bid.

Nonetheless, Biden has repeatedly insisted he plans on running against Trump in November. “I am running, and we’re going to win,” he vowed at the Detroit rally.

Governor Gretchen Whitmer, Senator Gary Peters (D., Mich.), Representative Elissa Slotkin (D., Mich.), and United Auto Workers president Shawn Fain notably did not attend the campaign event.