Republican leaders were pushing for a final vote to pass their marquee tax cut and domestic policy legislation, but had yet to resolve major issues after an all-night session of voting and negotiations.

The Senate on Sunday afternoon began debate on President Donald Trump's megabill for his second term priorities after a dramatic procedural vote late Saturday night.

Debate is underway in the Senate for an all-night session Sunday, with Republicans wrestling President Donald Trump's big bill of tax breaks.