It is vital to the American people to retain sovereignty of the US.
One thing though is certain, if there is to be such a creature, it won't be because the President and Congress shoved it down out throats.
There are already plans for a currency of the Americas.
Americans will gleefully move their portfolios to the Amero once it is setup as a strong alternative on the world market against the artificially devalued dollar.
The Feds will have us transfer to the Amero without forcing us to do so. They will lay out an alternative to the dollar in an attempt to preserve the value of investments.