But over the past week, Elizabeth MacDonough, the quietly powerful Senate parliamentarian, may have had more influence over Donald Trump’s legislative agenda than anyone else in Washington. After meeting with Republicans and Democrats behind closed doors,

U.S. President Donald Trump and his allies in the Senate face a political free-for-all over passage of his sweeping tax-cut and spending legislation, which Republican congressional leaders hope to enact in coming days despite growing resistance from different party factions.

Senate Parliamentarian Elizabeth MacDonough dealt big-time blows to GOP priorities this weekend when she ruled that chunks of President Trump's "big, beautiful bill" violate the chamber's rules.