Jim - you pointed out the most important thing that has been missed here - this is proposed legislation - that means that it has to go through the standard public comment period, then once it gets to congress, it has to pass both bodies, and then "maybe" it will be published in the Fed Registrar as a real law. Of course, it will then more than likely be challenged in the courts which will "probably" reverse it or at least stop it from being enforced until the suits can be answered which will take way longer than the people sitting in office have left in their terms
Its a good idea to know exactly what 2257 does and how it affects you right now, but until the comment period is over for the proposed regs, and all of the comment are incorporated into the revisions, its probably not something to get all fluffed about today.