Stocks drift to a mixed close as worries about the US government's soaring debt continue to weigh

NEW YORK (AP) — Stocks drifted to a mixed close on Wall Street Thursday in what has been a rocky week so far because of worries coming out of the bond market about the U.S. government’s mounting debt. Trading remained choppy throughout most of the day following Wednesday’s big slump for the S&P 500. That loss has put the benchmark index on track fo...