Mayor Brandon Johnson will testify before lawmakers on Capitol Hill next month as part of an investigation into U.S. sanctuary cities. House Committee on Oversight and Government Reform Chairman James Comer announced Wednesday that the mayors of Chicago,

The mayor plans to testify on Chicago's status as a sanctuary city, which prohibits local law enforcement from partnering with immigration enforcement agents without a judicial warrant.

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.