By tradition, U.S. Supreme Court nominees are introduced to the U.S. Senate Judiciary Committee for their confirmation hearings by the senators from their home state.

The two senators from Colorado introduced Neil Gorsuch on Monday, but they were joined by a highly unusual third party: Hogan Lovells partner Neal Katyal, former acting U.S. solicitor general in the Obama administration, and a lead lawyer in the litigation against President Donald Trump’s travel ban executive order.