What most people here forget is that, unlike countries like Greece or France, the US owns the central bank that defines the interest rate for the US dollar. So, all the government has to do is appoint someone who wants low interest rates to the chair of the Federal Reserve, and the interest rates will go down. So, the US government doesn't care about the interest rate because it knows it can always print more money (which also increases the GDP).
tl;dr: The US governments are treating money as fun coupons and will keep printing more of it, prepare for the dollar to keep sliding against any scarce asset (housing, farmland, gold, etc) beyond what official inflation figures say.