After weeks of infighting, last-minute rewrites, and a marathon vote-a-rama, Senate Republicans narrowly passed President Donald Trump’s sweeping domestic policy bill on Tuesday, setting up a final showdown in the House.

All told, the Senate bill includes $4.5 trillion in tax cuts, according to the latest CBO analysis, making permanent Trump’s 2017 rates, which would expire at the end of the year if Congress fails to act, while adding the new ones he campaigned on, including no taxes on tips.

GOP strategists seemed to understand the buzzkilling buzzsaw they were marching toward with a grim sense of inevitability. Even then, there was still no guarantee the House would accept the Senate’s rewrite of their work.