Treasury secretary Janet Yellen, in one of her final major acts in office, warned Congress late Friday that the Treasury will need to begin "extraordinary measures" on Tuesday to avoid hitting the debt limit.

Janet L. Yellen, the outgoing Treasury secretary, urged lawmakers to raise the debt limit and protect the full faith and credit of the United States.

U.S. Treasury Secretary Janet Yellen is warning that the government will reach its debt limit on Tuesday and will need to take “extraordinary measures” to avoid risking a potentially catastrophic default.