[Brutha]

# Is the United States going to invade Iran now that Iran has stopped accepting the USD in 2006?

Not if the US get a democratat as president in 2008.

# Will the adoption of the Amero result in the dissolution of the United States constitution?

A constitution isn't the key. It's a symbol for certain values.
Attacking the symbol isn't the way to attack the values behind a constitution.

As long as people believe in the values the new organisation will also have those values.
The UK for example does quite well without a constitution but with a citzinary that believes in seperation of power and human rights.
American lawbreaking: Illegal immigration. - By Tim Wu - Slate Magazine makes a fine argument on how the words written in the actual law don't have any effect any more when nobody believes in the value behind the law anymore.

The danger to freedom doesn't come from outside dangers like RFID chips or a North America.
Those things can only do damage when the internal societal values are broken. On the other side you don't need any outside factor to do damage when the internal values are dead.
Don't fear the unknown.

# Did the United States invade Iraq because Iraq stopped accepting the USD in 2000?

I think they invaded to get influence in the region and over the Oil.
The switch away from the USD is one of the sign that the lost influence before that.