[I]mpeachment does not require proof of a crime... The argument that only criminal offenses are impeachable is deeply and profoundly wrong. It misund… - Laurence Tribe

American Constitutional Law... final chapter... "The Problem of State Action," grappled with one of the most perplexing aspects in the law of the U.S. Constitution: its character as a body of law addressing not ordinary private conduct but only government conduct. ...[T]he law of the Constitution is a kind of meta-law. ...many instances of what might be regarded as government inaction pose troubling constitutional questions. ...[T]he Supreme Court has generally interpreted constitutional provisions as having nothing at all to say about non-governmental choices. ...One might ...say that the constitutional principle limiting the Constitution’s reach to "state action" is an unwritten command ...essentially "heard" in the sounds of constitutional silence. ...I closed the book with the question: "[I]s it not fitting that a book about the Constitution should close by studying what the Constitution is not about?"

[W]e should beware of "hearing" silences where nearly all readers, setting aside how they would like a particular controversy to end, identify determinative text... "The heart has its reasons," as Pascal famously said, "that reason does not know." Good enough. And those heartfelt reasons deserve a hearing. But when they defy reason, the meaning of living by the rule of law is that reason should prevail.

[I]t is largely because I find all exercises of power by some over others—even with what passes for the latter's consent—are and must remain deeply problematic, that I find all legitimating theories not simply amusing in their pretensions but... as dangerous as they are convincing.