The president is keeping his options open on drug pricing legislation, but sources doubt he’ll return to backing Medicare price negotiation, even if his primary challenger is Democratic Socialist Sen. Bernie Sanders, who would likely attack President Donald Trump for not following through on his 2016 campaign promise to negotiate cheaper drug prices. Acting Director of the White House’s Office of Management and Budget Russell Vought said Feb. 10 in an NPR interview that the president’s proposed budget does not...