Meet the Press NOW — May 19

President Trump holds high-stakes phone calls with Russian President Vladimir Putin and Ukrainian President Zelenskyy as he looks to broker a ceasefire. Moody's downgrades the U.S. credit rating, citing concerns about the country's national debt. Former President Joe Biden is considering treatment options after announcing his cancer diagnosis. Rep. Brad Schneider (D-Ill.) joins Meet the Press NOW to discuss Democratic opposition to the Trump tax bill.