Man, you guys are funny.... yes, the government is out to get you mua hahhahah!
A floating market is exactly that. The market determines the relative strength of a currency. Since other countries have been growing their currencies have been steadily increasing in value (more demand) while our country has been loosing production (decreasing demand for dollars).
Furthermore, other countries are shedding US dollars as the defacto reserve currency further deteriorating the demand for dollars.
Short-term wise a weak dollar is going to hurt... but in the long run as things balance out and the world uses a basket of currencies the weak dollar is going to be a benefit for us to transition back to a production oriented economy.
-chuck22b