Economists say AI-driven productivity could buy Washington time on its deficit crisis—until longer lifespans, a shrinking labor force, and a possible AI arms race start clawing the savings back.

AI has the potential to be so transformative that it "should give optimists pause," the economists note.

Economists say AI-driven productivity could buy Washington time on its deficit crisis—until longer lifespans, a shrinking labor force, and a possible AI arms race start clawing…