Mayor Brandon Johnson will travel to Washington, D.C., next month to testify at a congressional hearing on Chicago's status as a sanctuary city for undocumented immigrants. House Oversight Committee Chairman James Comer (R-KY) sent letters Johnson and the mayors for three other major cities – Boston,

Ky., opened an investigation into Chicago and three other cities with Democratic mayors, requesting they all appear to answer questions on what he described as “their misguided and obstructionist policies” blocking local police from immigration enforcement.