Impeachment is a political act, not a criminal one. If the House majority is more enamored of their prospective legislative agenda than a President’s criminal or unethical activity, then that activity is by definition not sufficient to lose the office. The President can do whatever he likes until the House decides it’s Too Much™. Calling unethical behavior “not obstruction of justice” is a canard; the real question is if Paul Ryan cares more about creating an Ayn Rand wonderland than suffering a Keystone Kops Executive. He clearly does.
Once upon a time, “it’s not illegal if the President does it” was a joke on its face for its hubris. The truth we’ve been reminded is, “it’s not functionally illegal for the President if Congress abides it”. Certainly the President can hire and fire who he wants in the Executive; the check against abuse of that power is impeachment. The President could systematically fire every federal investigator and prosecutor probing them, FBI, CIA, NSA, DoJ, whoever – they all serve at the behest of the President, and he can functionally dismantle pretty much any investigation of his conduct the moment he’s aware of it. Again, the only check on that is impeachment, or a Cabinet-level 25th Amendment revolt.
Congress didn’t abide Clinton’s weasel answers about blowjobs. They apparently are much more comfortable these days with the President strong-arming the heads of the FBI, CIA, and the DNI about on-going investigations involving close allies of the President. The sad fact is that the American federal legislative body is so moribund and rotten through that it can no longer be counted on to fulfill any of its roles, compromising itself, the Executive, and the nation itself.
Maybe I should re-read The Fountainhead. I don’t remember it being THAT good.