Don't confuse the HSUS with the ASPCA. The ASPCA (the society that protects animals), actually went head to head the HSUS a while back; they were taking donations and not providing promised care to animals.
HSUS is kind of like PETA. They are all talk and want all the credit they can possibly get and do no work. The ASPCA are the "good guys", so to speak. They actually step in and help the animals. As far as I know, the ASPCA also doesn't make a stance one way or another towards exotics pets. Any opinions I've ever gotten from them were individual and generally all felt "if you can care for it properly, we're okay with that."