MADISON, Wis. (AP) — A conservative Wisconsin law firm on Tuesday sued to stop federal student loan forgiveness, saying President Joe Biden’s loan forgiveness plan is discriminatory.

The Wisconsin Institute for Law and Liberty’s federal lawsuit asks a judge to immediately block student loan forgiveness until the lawsuit plays out.

“The president has no authority to order a wholesale forgiveness of student loans, costing taxpayers up to a trillion dollars. Whether this plan is good for America is for Congress to decide,” said Rick Esenberg, the institute’s president.