If the whole world were to change their currency tomorrow and had the choice between gold or Bitcoin, Americans would be well served if Bitcoin was chosen. The reason being, we are richer in Bitcoin compared to the rest of the world than we are in gold compared to the rest of the world.
In tons of gold, the United States holds 8,133 out of a total 30,623 with the closest holder being Germany with 3,396. That is 26.5% of the world's gold controlled by the United States. (according to:
http://en.wikipedia.org/wiki/Gold_reserve)
In number of Bitcoin hosts, the United States has 6005 out of a total 14,727 with the closest holder being Germany with 1096. That is 40.7% of the world's Bitcoin nodes controlled by the United States. (according to:
http://bitcoinstatus.rowit.co.uk/)
If tomorrow the whole world switched over to Bitcoin, we would hold over 40% of the world's wealth. This would solidify our presence on top of the world stage for a long time to come.
Even without switching over tomorrow, the eventuality of Bitcoin becoming a dominant world currency presents the challenge to all nations to get a larger piece of the pie before other countries catch on and get priced out of existence.
And yes, I do realize that the number of nodes does not necessarily mean that the amount of Bitcoins is evenly distributed between all nodes, but it gives a good statistical indicator in a currency where anonymity does not allow for knowledge of who owns what amount of bitcoin.
So, at the moment, it would benefit all Americans to start pushing Bitcoin as a viable currency and start pushing that 40% higher before other countries catch on and tip the scale in their favor. And at current prices, that would not be very difficult to do.