It seems that only MtGox actually enforces them.  Are they now a PSP or bank?

MtGox says the reason they prohibit wallet-to-wallet bitcoin transfers (yes, they are prohibiting for unverified accounts now - even if you put your coins in there long ago) is because of the AML laws... yet, no other wallet site (that I know of or use) has this restriction, as they all allow me to transfer bitcoins to another address without the need to verification.

So, either MtGox is making up it's own AML rules, or none of the other sites, like Blockchain, for example, are following them.

Does any know what the real deal is with these AML laws?  it is all kept very secret.  In fact, the AML laws require that the exchange NOT notify the users in advance before the exchange put in place any new restrictions or limits...but only AFTER they are in place.

The real question is... where can I read the AML laws, specifically on how they apply to bitcoins? (although I still find it hard to believe they even Do apply for wallet-to-wallet transaction... but that is what I am told by MtGox)