Obviously the subpeona didn't have "the full force of the law" behind it." The law is what it is, you may not like it, and if you don't, vote someone in who will change it. If you can't live under the laws of the land or change them, then perhaps it's time to move to another country. I do not believe there are any Constitutional issues involved here. It was foolish to think congress could have resolved this issue.
Yes. It was foolish of our founding fathers to think that morality and legality should be partners rather than enemies.