https://www.aol.co.uk/senate-byrd-rule-upends-trump-163626929.html
What is the Byrd Rule?
The Byrd Rule, adopted in 1985, is a procedural constraint named after the late Senator Robert C. Byrd of West Virginia to prohibit extraneous provisions from being tacked onto reconciliation bills, which are fast-tracked budget packages that allow legislation to pass with a simple majority, bypassing the 60-vote filibuster threshold.
The rule makes it so that every line of a reconciliation package must have a direct and substantive impact on federal spending or revenues. Provisions that serve primarily policy goalsrather than budgetary onesare subject to elimination by a parliamentary maneuver known as a point of order. Whether a point of order is sustained is ultimately made by the parliamentarian, who is essentially the Senates umpire tasked with providing nonpartisan advice and ensuring that lawmakers are complying with the Senates rules.
Parliamentarians often face backlash during the budget reconciliation process, when they determine whether policy proposals comply with the constraints of the Byrd Rule.