Boston Mayor Michelle Wu said Tuesday that the city is still determining how to respond to a call from congressional Republicans for her and other Democratic mayors to appear at a Capitol Hill hearing to discuss their local immigration policies.

Boston Mayor Michelle Wu says her administration feels “very strongly that we’re on solid legal ground” in being a sanctuary city and is still reviewing a letter it received from Congress on getting called to testify on such policies.

Michelle Wu, the Democratic mayor of Boston, said the city is not forced to participate in federal immigration actions.