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 spokesperson for the mayor's office could not confirm if he plans to testify before Congress on Denver's "sanctuary city" status, and said the mayor is still reviewing the letter from Congress. Denver7's Kristian Lopez reports.

Denver Mayor Mike Johnston on Tuesday decried immigration raids in schools and hospitals. “We don’t want people targeting schools or churches or hospitals,” Johnston told CNN’s Jake Tapper on “The Lead.