We pay lower yields because the Federal Reserve gives the Treasury money for free! They just print up some more.
Where we will run into a problem (soon) is when the rest of the world decides they don't want our dollars. Imagine going go to buy something and the clerk says sorry we don't accept US dollars here. Now what are you going to do? happily OPEC is still accepting dollars for oil, that is the only thing keeping us afloat.
Nine European Nations Downgraded by S&P:
JANUARY 11 Greece so poor families are abandoning their children
JANUARY 12 - Greece's unemployment rate jumped to 18.2%
here in the USA 15.227 trillion and counting
Just a little reminder debt(spending) kills nations
When we gut our military the reasons foreigners buy our debt (oil in dollars for just one example) will disappear.
And to accelerate our downfall we’ll gut the military to free more money for welfare programs...