Hi John,
The last time the crackdown occured was because a west coast caecilian researcher pointed out the violation to USF&W (after aquiring specimens for her lab from an online source).
As they are not threatened or endangered and a few years ago, there was even a note in froglog about thier population actually expanding due to the practice of fishing villages dumping the fish guts into the water and providing an additional food source.
I don't know if anyone has notified them as of yet but I heard that they are currently helping USDA try and tgrack down some Giant African Land Snails that were illegally imported (Listed as an injurioius plant pest).
Ed