Although I own both physical gold and gold shares, I do not buy the argument that the US or any other government is planning the demise of the dollar. I think talk like that is just pure junk!
In my oppinion, the US government is run by and large by average intelligent people and they are trying to do good both for the people and themselves. The bottom line that for too long they have been trying to be Santa Claus and with any sign of a slowdown they were there to provide more goodies. Now we are facing the music, and yes I am sure that various people within the government systems have indeed thought about the risk and implications of a significant dollar drop.
Could the dollar drop significantly yes, but then every currency in the world would drop more or less simultaneously.