The Trump administration stepped up its legal fight over the president’s crackdown on undocumented immigrants by suing Illinois and Chicago, claiming their “sanctuary” policies prevent local officials from cooperating with federal immigration enforcement.

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.

House Oversight Committee Chairman James Comer (R-KY) sent letters Johnson and the mayors for three other major cities – Boston, Denver, and New York – last week, asking them to testify before the committee and hand over all documents and communications related to their city's sanctuary policies.

Mayor Brandon Johnson says he’s reached a decision about whether he’ll accept an invitation to testify on Capitol Hill about the city’s “Welcoming City Ordinances”. The Mayor’s office has confirmed that Johnson will be heading to D.