Boston Mayor Michelle Wu is defying the Trump administration’s demand that sanctuary cities comply with federal immigration enforcement, declaring the city “will not back down” despite threats of funding cuts and lawsuits.

Boston’s status as a sanctuary city that limits cooperation with federal immigration authorities has been up in the air since the Trump administration began carrying out mass deportations. Boston’s Mayor Wu is fighting back against the federal perception that sanctuary cities are illegal,

Boston Mayor Michelle Wu responded Tuesday to an ultimatum from the federal government over sanctuary city policies.