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 will testify before Congress next month as part of a Republican-led House probe into sanctuary cities, his office announced Wednesday.

Chicago Mayor Brandon Johnson’s approval rating is down to 14%, the lowest in Chicago mayoral history. Nearly 80% of those polled hold an unfavorable view of Johnson.