Boston Mayor Michelle Wu testified before a House committee on so-called "sanctuary cities" in Washington Wednesday.

Mayors of four of the largest cities in the U.S. appeared before lawmakers in the U.S. House of Representatives on Wednesday to defend their so-called "sanctuary city" laws, which restrict local officials in helping enforce federal immigration regulations.

Republican members of Congress hammered four Democratic mayors about their so-called sanctuary city policies, accusing them of endangering Americans and threatening to prosecute local officials.

Her decision stands to shake up the race as her traditional base of support overlaps with that of the two scandal-scarred executives headlining the contest: Mayor Adams and former

New York City Council Speaker Adrienne Adams is joining the race for mayor, taking on Eric Adams and Andrew Cuomo.

Our city deserves a leader that serves its people first and always, not someone focused on themselves and their own political interests.”