BTW, they aren't holding "all our paper". Wealthy US hold much; Saudis etc. too.
See foreign holdings of US debt
http://www.house.gov/tanner/foreignholdings.htm and US Treasury link in link above for fully examination
http://www.treas.gov/tic/mfh.txtand see Consequenced of foreign ownership of US debt at
http://www.answers.com/topic/united-states-public-debtChina seems to have become a part of the US web of economic interconnectedness that is intended to prevent wars in the future: you're less likely to fight your trading partners.
Weathly in the US (that 1 and 1/2 % we hear so much about, and 'Bush's base') hold 56% of the public debt, foreign interests hold the remaining 44%,
""It is common for individual Americans and businesses to buy bonds and other securities, though much of the debt is now held overseas. At the end of 2004, foreign holdings of Treasury debt were $1,886 billion, which was 44 percent of the total debt held by the public. Foreign central banks owned 64 percent of the Federal debt held by foreign residents; private investors owned nearly all the rest (figures are from the Analytical Perspectives of the 2006 U.S. Budget, page 257 <1>). The country holding by far the most debt is Japan which held $679 billion at the end of March, 2005. In recent years the People's Republic of China has also become a major holder of Treasury debt, holding $223.5 billion at that time.""
'Structure of the debt' at
http://experts.about.com/e/u/u/U.S._public_debt.htmThe more pressing issue is wealth accumulation at the highest income percentages along with the issue of wealth redistribution, or, as Louis Brandeis once said, "you can have great wealth or a democracy, but you cannot have both".