Boston Mayor Michele Wu said she's ready to testify before a congressional panel​ on Wednesday despite Republican lawmakers already pushing out videos that indicate questions will have an aggressive tone.

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.

Boston Mayor Michelle Wu spoke out on Monday after receiving pushback for offering condolences to the family of a suspect who allegedly tried to stab two people with a knife on Saturday.