More than $75B has flowed in over last four weeks despite looming debt-ceiling deadline.

Greenback is a loser this year against all 16 major currencies.

Greenback is a loser this year against all 16 major currencies.

In 2011, Obama administration put together contingency plan to prioritize payments..

In 2011, Obama administration put together contingency plan to prioritize payments..

Credit arbiters expect Congress to reach an agreement on the debt limit before it becomes a problem.

Some investors may go without protection against market selloffs.

Some investors may go without protection against market selloffs.