If, by that statement, you mean that Congress should set the weight of the dollar in gold, then I agree with you. Otherwise, the government has no idea at all what the value of the dollar should be and we'd be much better off if it just stayed out of it.
OK, so we agree that arthurus is wrong and that the government has a lot to do with the economy. As for the dollar's value, my agreement or disagreement doesn't matter. What we're working with is this--
U.S. Constitution Online Article 1 - The Legislative Branch Section 8 - Powers of Congress The Congress shall have Power... ...To coin Money, regulate the Value thereof...
So Congress decided that this morning the dollar would be worth 1/1375.25 oz gold, and in the afternoon they changed it to 1/1365.00 oz. If this is still not what you want, then you might want to be more specific about values and time frames.