The ouster of House Speaker Kevin McCarthy last week by Republican hardliners has raised concerns about a prolonged paralysis in Congress.

Military and economic support for Ukraine "along with resources for Israel are our absolute top priorities for the Biden administration," Yellen said.

"We've made that completely clear to Congress, and we believe there is substantial bipartisan support," she said at a press conference on the sidelines of IMF-World Bank meetings in Marrakesh, Morocco.