For months, Republicans have argued that there's a glaring flaw in various budgetary projections showing that deficits will significantly increase if Congress passes a major tax cut and spending package.
The problem, as they see it, is that initial budget projections of major legislation—like those crafted by the Congressional Budget Office (CBO)—fail to take into account potential economic consequences. When the CBO said that the bill would add $2.4 trillion to the deficit over 10 years, the White House and top Republicans in Congress pushed back by suggesting that booming economic growth would shrink that figure.
"The problem is they do not use what we call dynamic scoring," Speaker of the House Mike Johnson (R–La.) told Fox News on May 29. "What that means in layman's terms is they don't give us any credit for the extraordinary economic growth that will be spurred along by this bill."