A broad coalition of abortion-rights groups will call on senators to oppose Neil Gorsuch at all costs in an effort to stoke liberal opposition to the Supreme Court nominee just days before his consequential confirmation hearings.

Warning that Gorsuch would “put reproductive freedom in danger,” more than 50 groups have signed onto a letter meant to pressure Senate Democrats to block the appellate judge from Colorado from replacing the late Justice Antonin Scalia. The groups also go after President Donald Trump for promising during his campaign to nominate justices to the nation’s most powerful court who oppose abortion rights, which the coalition calls an “outrageous litmus test” in the letter.