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 in a Republican-led hearing on sanctuary cities, his office announced Wednesday. Last month, Oversight Committee chair U.S. Rep James Comer,

Chicago Mayor Brandon Johnson will be "pressed" for answers about the city's status as a sanctuary city during an upcoming Congressional hearing in Washington, D.C.