Forecaster says the bill would cut health cover for 11.8 million people and increase deficit by $3.3 trillion.

The Senate on Saturday narrowly voted to begin debate on the sprawling domestic policy package carrying President Trump’s agenda, clearing a key procedural hurdle after Republican leaders cut a series of deals with holdouts in hopes of winning the votes to pass it.

Debate is underway in the Senate for an all-night session Sunday, with Republicans wrestling President Donald Trump's big bill of tax breaks and spending cuts over mounting Democratic opposition — and even some brake-pumping over the budget slashing by the president himself.