Well then let's not stop there, let's clean up the USA!....Save for the native Americans, we don't belong here either! We certainly are invasive, have no regular preditors, I guess you could eat us, but that doesn't seem to be a priority. As rediculous as that sounds, is it really any different? Haven't past leaders tried to do this and we're horrified to even think about it? These are living creatures that have adapted to an environment very well. Over time something will evolve to eat them, and something to eat those as well. We think on very short time scales and only about ourselves. As I said...no one is going to change their minds, and we (not me) will possibly make a dent to eradicate a species and only because they've learned to eat well and be capable of defending themselves (to an extent) from us. I swore I wasn't going to get into this, but it's almost become the norm to dive and see someone killing fish. I'm not down there to see that...I'm down there to take in the beauty of everything that most people never get to see, and leave no mark that I've ever been there.