Do You Know the "Net Worth" of the U.S. Government?

According to the "Government Accountability Office (GAO)," the U.S. Government has a "net worth" of a minus $16.91 trillion.  The U.S. Government's assets in 2013 amounts to $2.97 trillion, which includes cash, financial assets, land, highway system, etc.. Its liabilities amount to a total of $19.88 trillion, which includes the national debt and loan guarantees.  If the U.S. Government was a household, its FICO score would  be 350.  But then again, no one seems to really care about the underlying financial health of our country.  In other words, none of this economic/financial rants matters to anyone until, unfortunately, it matters to everyone.