**New York City Mayor Zohran Mamdani and President Trump have developed an unexpectedly cooperative relationship since Mamdani’s 2025 election, centered on federal support for major housing projects such as the Sunnyside Yard development in Queens.** Mamdani has already made multiple visits to the White House complex, including an unannounced trip in February 2026 and an earlier Oval Office meeting, with discussions covering affordability, immigration, and infrastructure funding. Their most recent in-person engagement occurred on September 21, 2026, at Gracie Mansion during the UN General Assembly, where they agreed to advance talks between city and White House officials on housing. Trader assessments of future visits by specific deadlines typically hinge on Mamdani’s ongoing need for federal resources, scheduled diplomatic and policy interactions, and the durability of this pragmatic partnership amid broader partisan tensions.