This decline in Trump's approval rating among Republicans could signal growing dissatisfaction within the party's core supporters.

The Tax Policy Center, which provides nonpartisan analysis of tax and budget policy, projected the bill would result next year in a $150 tax break for the lowest quintile of Americans, a $1,750 tax cut for the middle quintile, and a $10,950 tax cut for the top quintile. That’s compared to what they’d face if the 2017 tax cuts expired.

Donald Trump's signature tax and spending bill was in limbo early Thursday as Republican leaders in Congress scrambled to win over a group of rebels.