Tucker Carlson made some explosive assertions Friday, suggesting that the CIA and the FBI brought down Richard Nixon because he was on to their efforts to undermine the American system as the Founding Fathers had intended it to run and knew that the CIA was involved in the assassination of John F. Kennedy. Carlson’s segment quickly became wildly controversial, but is it true? We may never know for sure — and that in itself demonstrates yet again the need to demand and enforce complete transparency and accountability from these agencies that all too easily can go rogue.Carlson said: “Richard Nixon...