The Department of Homeland Security has tapped $20 million to pay for the campaign-style ads glorifying President Donald Trump that have drawn widespread criticism from Republicans and Democrats as a blatant misuse of taxpayer dollars that likely runs afoul of anti-propaganda law.

In a letter Tuesday to Homeland Security Secretary Markwayne Mullin, two top Democratic senators said that the money is being drawn from Trump’s so-called “One Big Beautiful Bill” and was supposed to go for U.S. Customs and Border Protection.

“We should not have to remind you that using government funding to create or air political ads like the ones that have been running over the last few days is illegal and a shockingly corrupt misuse of taxpayer dollars,” wrote Sen. Patty Murray of Washington, the top Democrat on the Senate Appropriations Committee, and Sen. Chris Murphy of Connecticut, the ranking Democrat on the subcommittee that handles Homeland Security funding.

The senators, in their letter to Mullin, demanded answers within the next 48 hours about “how this president is literally stealing their tax dollars to air campaign ads celebrating himself.”

They asked the secretary if the department plans to use additional federal funds to air these ads or create new ones, and if so to share contracting information with the Congress. They also asked Mullin if he had spoken to Trump about using the taxpayer funds for the ads.

The political uproar over Trump’s hagiographic ads, which started running last week during popular TV shows, including college and National Football League programming, has not abated as critics on the left and right raise alarms about the use of taxpayer funds, particularly so close to the midterm elections.

The White House has defended the advertisements, which disclose that they are funded by the U.S. government, as public service announcements.