Meet the Press NOW — March 4

U.S. tariffs on Mexico, Canada and China go into effect as President Trump prepares to deliver his first address to a joint session of Congress. House Ways & Means Chairman Rep. Jason Smith (R-Mo.) joins Meet the Press NOW to discuss budget negotiations and backlash GOP lawmakers are facing at town halls. President Trump orders a pause on military aid to Ukraine following the Oval Office clash with President Zelenskyy.