Did anybody notice that an "international group" of astronomers demoted the only "planet" discovered by an American?
I think that's really stretching things a bit. Pluto is an oddball as far as being defined as a planet would be. It has an erratic orbit and it is out of the planetary plane. The axis of its gravitational orbit with Charon (it's major moon) does not lie within Pluto's own mass.
If it makes you feel any better, you can always ridicule Euro-trash with this phrase "haha you guys didn't discover Your Anus until 1781, hahaha"