The estimate from the nonpartisan Congressional Budget Office is all but certain to inflame an already intense debate inside the G.O.P. about the fiscal consequences of its bill to enact President Trump’s agenda.

President Trump's big agenda bill is facing some serious resistance from Republicans, especially after it was revealed the bill would add $2.4 trillion to the national debt over the next 10 years, according to an estimate from the non-partisan Congressional Budget Office.

Its assessment comes a day after key Trump ally Elon Musk blasted the bill as a "disgusting abomination," giving fresh support to Republican deficit hawks who have been pushing back against the measure.