He wasn't specific, but I'll name you two: Indian casinos, and the correctional officers. Can McC renounce those two interests?
This is another early item I have been on a search for LOL
One account of Arnold's appearance on Jay Leno reported that Arnold said he was "against special interests such as unions" or something like that.... again, I didn't save it, and, again, I'm frustrated to no end that I can't find it :-)