Regardless of the fall in value over the last month, over the last year the US dollar seems like it is in reasonable shape. See below:

But wait… lets expand the time frame about the length of Bush’s time in office. See below:

While I am not one to blame all our misfortunes on one man, I think the whole adminstration should take the blame. That being said, any strides it seems like the dollar has made over the last 6 months seem absolutely useless compared to where we were 8 years ago.
Take the good with the bad, at least better people are coming into office… maybe.
More on this topic
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The Death of the Dollar
(Learn Mining News, 4/26/12)
Will the Dollar Be Replaced As a Reserve Currency?
(Investment U, 5/3/12)
Why the U.S. Dollar is Critical for the S&P 500 Index this Week
(Scott's Investments, 4/29/12)