A new budget projection shows the Democratic climate and social spending bill would add to the deficit, a finding that could further imperil support from centrist Democrats like Sen. Joe Manchin.

The Wharton School at the University of Pennsylvania released a report finding that President Joe Biden’s Build Back Better Act, as it currently stands, would generate $1.8 trillion in revenue but cost $2.1 trillion in spending, resulting in a net deficit of $274 billion over the next decade.