[navyblue]

Why isn't it number one?

Neither of the other nations has ever militarily invaded the United States!

Mexico has!!

Columbia, New Mexico in 1922!

[Verginius Rufus]

That should be Columbus, NM, 1916 (March 9)--19 Americans killed on American soil by Pancho Villa.

Earlier Villa had murdered 16 Americans he had removed from a train in Mexico; there was also a later raid on Glen Springs, Texas, during which 3 Americans were killed.