House Republicans were jubilant after muscling through President Donald Trump’s “big, beautiful” tax and immigration package by a single vote. But across the Capitol, senators were more cautious. Senate Majority Leader John Thune can afford to lose three Republican senators and still pass the bill,

The House passed the “Big Beautiful Bill Act” in the wee hours of Thursday after more than seven hours of debate on the floor — and that doesn’t include the nearly 22-hour hearing beforehand that lasted the entirety of Wednesday.

There are as many factions among Republicans in the upper chamber as in the House. Both chambers have to agree on the final product. It won’t be easy.