You know the worse part about that is, most of the invasives (at least down here) aren't the fault of irresponsible pet owners at all. A lot of the little stuff, geckos etc, are stowaways on shipments of whatever, and even the pet types are more likely escapes from dealers/importers. Then of course there's the snakeheads; the scare came from northern snakeheads which were never "aquarium fish" anyway, and then you've got the pbass which were deliberately introduced.
But these political types have found it's much easier to blame those kooky herpers, it helps that all the so-called animal rights groups (PETA, HSUSA, etc) hate us too and will willingly participate in the fraud.