Tue, 05/09/2023 - 10:08 Tech Insider U.S. Treasury Secretary Janet Yellen speaks during a news conference at the IMF and World Bank Annual Meetings at IMF headquarters, October 14, 2022 in Washington, DC.Drew Angerer/Getty Images Tags Markets, MI Exclusive, Janet Yellen, Treasury Secretary Janet Yellen, Debt Ceiling, US Debt, us debt default, Biden, Joe Biden, Congress, Republican, democrat Source Treasury Secretary Janet Yellen is warning CEOs about the potentially "catastro…