I joined a couple of years ago when they added retics and burms to the lacey act and *almost* added boas... With the threat of interstate transport (say from GA to AL) being a felony act... You can understand the repercussions of that on pet owners going to see vets, moving, etc. and of course breeders. They used funds to fight USFWS's interpretation of the Lacey act (that it banned importation and transportation to non-continental holdings like Hawaii but not interstate transport) and won... To me, that proves their intent and that they are effective.
If you don't want to join, they do have an option to only donate to their legal fund also.