As Boston Mayor Michelle Wu departed Capitol Hill on Wednesday, her challenger in this year’s mayoral race, Josh Kraft, said he supported the immigration policy that Wu had defended to congressional Republicans.

Boston Mayor Michelle Wu may be facing criminal prosecution for the city’s sanctuary policies after the prospect of federal charges was raised by numerous Republican lawmakers who grilled her at a

Wu has won their backing after successful contract negotiations. The endorsement comes as the mayor prepares to testify in Washington over what Republican legislators call the city's "sanctuary" policies.