"The government added $5.3 trillion in new financial obligations in 2010, largely for retirement programs such as Medicare and Social Security. That brings to a record $61.6 trillion the total of financial promises not paid for."

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U.S. funding for future promises lags by trillions

The federal government's financial condition deteriorated rapidly last year, far beyond the $1.5 trillion in new debt taken on to finance the budget deficit, a USA TODAY analysis shows.

The government added $5.3 trillion in new financial obligations in 2010, largely for retirement programs such as Medicare and Social Security. That brings to a record $61.6 trillion the total of financial promises not paid for.

This gap between spending commitments and revenue last year equals more than one-third of the nation's gross domestic product.

Medicare alone took on $1.8 trillion in new liabilities, more than the record deficit prompting heated debate between Congress and the White House over lifting the debt ceiling.

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http://www.usatoday.com/news/washington/2011-06-06-us-owes-62-trillion-in-debt_n.htm?loc=interstitialskip