OPINION: Comey's firing like déjà vu all over again with Nixon era

Once again an investigator got too close for comfort with the president.

— -- It feels like déjà vu all over again for those of us who lived through the Nixon administration. An investigator gets too close to the occupant of the Oval Office for comfort and gets the boot. The rule of law is threatened. Now what?

Now, with the exception of the media, which Trump has undermined on a daily basis, none of those other checks on the president is in play. The Senate Republican leadership has made it clear that no special committees or special counsels will be named. And the Congressional investigations that are underway stray far from serious inquiries.

Instead they point to the deputy -- citing his recent confirmation vote of 94-6 as a sign of overwhelming endorsement of his probity.

Cokie Roberts is a political commentator for ABC News. Opinions expressed in this column do not necessarily reflect the views of ABC News.