We don't wear togas either but that doesn't mean there aren't plenty of other parallels to be compared. Morally and spiritually to mention one. Every major world power has fallen in history, either from it's own weakness, corruption, or some combination of both. Why would America be the exception?
Don't get me wrong - I certainly want our country to avoid the same fate - I just see us making plenty of the same mistakes other nation powers have made throughout history. If we don't correct them soon, we may find ourselves as a nation facing the same consequences.
America is not an empire. There is no comparison. The “powers” that fell were all empires, Persian, Soviet, Rome, Britain, Mongol, etc...explain the similarities...
We are more like Britain making the same mistakes in the 19th C, and throw in some Spainish plutocrats and the scratch-my-back role of government Spain used to create their empire and you may have it.
But Rome?