The Senate Parliamentarian’s job is to provide nonpartisan advice to the chamber regarding senate rules, precedents, and statutes pertaining to senate proceedings. Senate Parliamentarian Elizabeth MacDonough’s rulings on the president’s signature legislation,

The Senate parliamentarian has advised that a Medicaid provider tax overhaul central to President Donald Trump’s tax cut and spending bill doesn’t adhere to the chamber’s procedural rules, delivering a crucial blow as Republicans rush to finish the package this week.