evidence: CBO found Build Back Better Act would increase, not reduce, federal deficits CLAIM: The Congressional Budget Office estimated that the Build Back Better Act "will REDUCE the deficit by $100B+ over 10 years." [...] "The CBO estimated that President @JoeBiden’s Build Back Better Act will REDUCE the deficit by $100B+ over 10 years," the official Twitter account for the Democratic National Committee claimed in a tweet. It went on to criticize Republicans for not supporting the package despite backing tax cut legislation in 2017, which the CBO estimated at the time would add $1.4 trillion to the national debt over the following decade.