Not sure about keep. I think just purchase. Like I think shops used to/still might get away with "giving away" a "Free turtle" when you buy a complete setup and making up for the cost in markups.
ic... thats pretty odd considering even red list endangered species are legal almost everywhere
due to them being bred in captivity. never would of realized it to be illegal in the east coast
especially considering that they cant be a invasive animal seeing how cold it gets there... im
gonna look it up and see if i can get some more detailed information on it lol.