The bill faces strong headwinds among senators across the Republican spectrum, including fiscal conservatives who say it authorizes unsustainable spending.

From centrists worried about Medicaid cuts to conservative hard-liners demanding steeper spending reductions, Senate GOP leaders face a tricky balancing act.

Trump aide Stephen Miller backed his boss’s tax bill in a post on X Friday. “The reconciliation bill cuts taxes, seals the border and reforms welfare,” the White House deputy chief of staff wrote. “It is not a spending bill.