The bipartisan U.S. House Committee on Oversight and Government Reform sent a letter to Denver Mayor Mike Johnston asking him to testify. Johnston didn't say if he would but criticized Republicans in Congress on immigration.

A congressional committee on Monday asked Denver Mayor Mike Johnston to testify in Washington, D.C., next month to defend the city’s policies limiting local police cooperation with federal

Mayor Mike Johnston has been asked to testify on immigration and "sanctuary policies", his office could not confirm if he plans to do so or not