President Joe Biden has called on House Republicans to compromise and end their standoff over the debt ceiling, warning of catastrophic consequences if it is not raised. Treasury Secretary Janet Yellen has warned that June 1 is a "hard deadline" for Congress to raise the debt ceiling, and that the US could default on its debt if it is not raised. Biden has also placed renewed emphasis on the possibility of citing the 14th Amendment to sidestep the debt ceiling, as negotiations with Republicans continue.