The organization is unveiling a petition Sunday asserting that “Congressman Steve King has crossed the line” and that recent “ugly, hateful language has no place in our debate about immigration. Period.” The message will be sent to people on the DCCC’s email list, a source told POLITICO.

“If Speaker Boehner and House Republicans truly want to condemn Congressman King’s views, it’s time for them to remove him from his positions of authority on the Immigration Subcommittee and Judiciary Committee,” continues the DCCC email, which is signed by the organization’s chair, Rep. Steve Israel (D-N.Y.) and includes a link to the petition.