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.

Denver Mayor Mike Johnston is one of four big city mayors called by congressional Republicans to testify at a hearing next month on so-called “sanctuary city” policies.

The House Committee on Oversight and Government Reform investigating so-called "sanctuary" jurisdictions across the nation has called for Denver Mayor Mike Johnston to testify in Washington, D.C.