On Monday, Mayor Brandon Johnson received a letter from Washington, D.C., that states, in summary, that Chicago and other cities like it — notably Denver, New York and Boston, all of which hold sanctuary city status like Chicago — are being investigated by the U.S. House Committee on Oversight and Government Reform.

Mayor Johnson was asked​ by the House Oversight Committee to testify on Capitol Hill next month about Chicago's sanctuary city status — along with other big city mayors.

Chicago Mayor Brandon Johnson has been called to testify before a congressional committee about the city’s sanctuary city status — a demand that came Monday as federal agents fanned across the Chicago area to carry out the Trump administration’s deportation operation.