Debt-ceiling talks stall as Treasury's cash pile dwindles.

The US Treasury Department has been steadily draining its funds to pay the nation's bills during the debt ceiling impasse, with only $57.3 billion in cash on hand as of Thursday. Treasury Secretary Janet Yellen has warned lawmakers that her ability to avoid default could end as soon as June 1, and negotiations to resolve the impasse have paused and resumed. If the US defaults, it would cause global economic and financial upheaval, with many Americans, businesses, and state and local governments facing delays in receiving federal payments.