New York City Mayor Zohran Mamdani has moved to reinforce the city’s sanctuary status, signing an executive order that restricts cooperation with federal immigration authorities and tightens protections for undocumented residents. The order bars federal immigration agents from accessing city property without a judicial warrant and reiterates that personal information collected by city agencies cannot be shared with immigration authorities except when required by law, as the city launches a multilingual outreach campaign to educate immigrants about their rights. Speaking at his first Interfaith Breakfast, Mamdani urged New Yorkers to respond to fear with “defiance through compassion,” framing the measures as a moral stand against a culture of suspicion.