Some Republican members of the House of Representatives have proposed prioritizing interest payments on U.S. debt as a way to mitigate the effects of a payment default caused by failure to raise the debt ceiling.
The S&P 500 fell 0.9 percent today.
Approximately 800,000 federal workers were furloughed when the government shut down began last Tuesday.
Warren Buffett served as a lender of last resort for a number of large companies during the global financial crisis of 2008.
Stocks rose today, though this week was the second in a row to finish in the red, as investors grew optimistic that lawmakers in Washington, D.C. would reach a deal to end the government shutdown.
Gold fell near $1,310, while the dollar rose from an eight-month low, but most trading was muted today as investors were hesitant due to the uncertainty of how long the government shutdown would last.