Legislation goes to House but unclear if lower chamber will accept changes to tax and spending bill amid factionalism

Senate Republicans on Tuesday passed a major tax and spending bill demanded by Donald Trump, ending weeks of negotiations over the comprehensive legislation and putting it another step closer to enactment.

But it remains unclear if changes made by the chamber will be accepted by the House of Representatives, which approved an initial draft of the legislation last month by a single vote. While Republicans control both house of Congress, factionalism in the lower chamber is particularly intense, with rightwing fiscal hardliners demanding deep spending cuts, moderates wary of dismantling safety net programs and Republicans from Democratic-led states expected to make a stand on a contentious tax provision. Any one of these groups could potentially derail the bill’s passage through a chamber where the GOP can lose no more than three votes.