Assume that restrictions for any Bitcoin to National Currency exchange may become more restrictive at any time in the future. Many exchanges in the past have restricted currency deposits or withdrawals proactively as BitStamp has, without any explicit order from a government agency to do so at the time. Others like BTCChina have in response to concerns made even the ability to continue to login to their platform contingent on supplying further identifying information. In the past surprise changes to AML/KYC requirements have lead users of exchanges to have their access to deposited funds substantially delayed while complying with new requirements or even lost access to their deposited funds completely if they could not comply with the new requirements. Changing AML/KYC exchange enacted AML/KYS requirements have effected users of all major exchanges that handle both Bitcoin and National currency. People who continue using such exchanges should prepare for the contingency that their exchange of choice will change their AML/KYC requirements in the future.