>why were they written exonerating Potus?
Good question, anon.
If he was going to go thru the trouble of writing fake memos to set up a SC appointment, why are they so weak?
>So, then I question why? Why was he thrown under the bus.
That is easy.
They probably knew it would be difficult to oust Trump on the fundamentals, but they could bait him to fire Comey to create an obstruction case.
Comey was taunting Trump, and in the meantime kept open the wiretaps and the cloud of guilt.
Trump's situation was lose-lose. Let your enemy keep spying on you and undermining your administration, or fire Comey and create the appearance of obstruction.