I receieved this information yesterday. It seems there is some confusion as to whether it is prima of owners of different sites using prima.
Dream Poker said it was a prima decision. Purple Lounge's decision to ban all US players leads me to believe individiual prima sites are making decisions.
There are a lot of prima sites out there, so you may want to check in with yours to find out.
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Prima poker is locking the members from 7 states that have laws set against online gambling. From what I was told if you have deposited or met the requirements on freeroll winnings you have to contact support and the will open your account to withdraw your funds.