Republicans advanced their massive tax cut and border security package out of a key House committee during a rare Sunday night vote.

The committee's top Democrat, Rep. Brendan Boyle, D-Pa., began by asking Rep. Jodey Arrington, R-Texas, the chairman, to be transparent with the committee on what "side deals" were struck to flip votes.

The House Budget Committee advanced the framework for President Donald Trump’s massive agenda after a late-night meeting on Sunday night, marking the first step toward enacting the president’s biggest campaign promises.