Congressman Jim Clyburn says Democrats will trim social spending bill "carefully"

House Majority Whip Jim Clyburn says Democrats are modifying the Build Back Better Act, Democrats' massive social spending bill with care, as they try to forge a compromise acceptable to both moderates and progressives in the party.

"We'll trim it down very very carefully — and with a whole lot of trepidation," the South Carolina Democrat said Thursday on CBSN. 

While a $3.5 trillion version of the bill has passed the House, the two factions in the Democratic Party have been negotiating about what will remain in the bill. Since it will only have the support of Democrats in the Senate, the measure must win the support of all 50 Democrats in order to pass, and two Senate moderates want to see the price come down before they'll back it.