Thanks, that helps. Gives me cause to do more research.
It’s important to note that when the Constitution was written, a politician’s job was considered a duty rather than an entitlement. The Congress would not by itself have any authority to punish people for things, but replacing someone who fails to perform his duties with someone who will perform them faithfully is not a punishment. Indeed, I’m somewhat uncomfortable with this “contempt of Congress” business. What Congress should be doing is demanding that Holder either demonstrate that he is faithfully executing the duties of his office, or resign so the position can be filled by someone who will. If Holder persistently refuses to do either of those things, Congress should impeach.