The Trump administration confirmed Monday that it is working to prevent rap duo Bob Vylan from entering the United States after they called for the death of Israel Defense Forces members at the Glastonbury Festival in the United Kingdom over the weekend.

The U.S. State Department has officially revoked the visas of British punk-rap duo Bob Vylan following their controversial performance at the Glastonbury Festival, where they led the crowd in chants of “Death to the IDF” and “Free Palestine.

The United States has said it was revoking visas for the British punk-rap group Bob Vylan which led a chant at the Glastonbury festival calling for death to the Israeli military.