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.

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.

Donald Trump ‘s signature piece of legislation, the One Beautiful Bill Act, will be able to retain a provision that prohibits states from regulating artificial intelligence over the next 10 years. Under the current language in the bill, states would lose out on federal broadband funding if they enforce such laws.