President Joe Biden on Monday blamed Republicans for blocking efforts to raise or suspend the U.S. borrowing limit and avert a dangerous first-ever default on the national debt.

The president slammed the GOP for what he described as hypocritical behavior: adding nearly $8 trillion to the U.S. debt during the Trump administration and later refusing to pay for already-approved tax cuts and spending.

Biden said that Republican leaders rejected a White House request that they forgo a filibuster and allow Democrats to pass legislation to raise the ceiling with a simple majority instead with a 60-vote margin.

That plan would theoretically relieve any GOP senators from approving a ceiling increase while simultaneously allowing Democrats to avoid putting a borrowing limit measure into their reconciliation bill that seeks to overhaul the U.S. social safety net.

Republicans “won’t vote to raise the debt to cover their own spending,” Biden said from the White House. “Not only are Republicans refusing to do their job, they’re threating to use their power to prevent us from doing our job: Saving the economy from a catastrophic event.”