Trump vs. Judge on Alien Enemies Act Escalates, Biden Autopen Questions, Putin Call: AM Update 3/18

AM Update for 3/18: The Trump administration challenges the authority of a DC District Court judge's ruling on deportations under the Alien Enemies Act. President Trump declares Biden’s autopen-signed pardons null and void. Trump and Putin are set to discuss a potential Ukraine ceasefire, with negotiations reaching a critical stage. Chuck Schumer cancels his book tour amid rising security concerns and progressive backlash.