As I said, debt and treasures become main target for all econimical trends in US. It even requires necessary losses, like stock market value. But you can correct them if it will become too bad (look at mr. Bernanke yesterday).
Raise the debt ceiling. Print out more dollars. Provide more dollar liquidity. Support the markets with excessive dollars.
Due to the sheer size of available dollars, it's becoming harder to replace the currency with any other existing currency. Yen? Euro? Gold? Renminbi? We must create a totally new currency to replace dollar, but it will take a long time if it ever happens.