New York City Mayor Zohran Mamdani had what he called a "productive" meeting with President Trump on Thursday, charming the president with a mocked-up tabloid newspaper featuring his likeness.Why it matters: Mamdani and Trump have developed an unexpected, made-for-TV relationship despite their vast political differences.The democratic socialist mayor and the Republican president had a shockingly cordial White House meeting in November, and have even texted back and forth since then. Now Mamdani...