Indeed.As a senior politician once said to me-"Ron if there is ever a choice between a conspiracy or a c*ckup the c*ckup wins every time.
Conspiracy is overstating what I am trying to say. I'm not saying that Boeing said to the White House "the plane is bad, but please don't ground". I'm suggesting that Boeing (first conversation) said "hey, we just don't know yet - there's no reason to ground the planes - we kind of think they are safe - just wait a few days" and the WH, because of Boeing's influence said "sure, we will give you the benefit of the doubt"...and then Boeing (second conversation) said "um, sorry, we think there may be a real problem here - go ahead and ground the planes so we can look into it before another takes a nose dive" and the WH said "ok - we will ground the planes today".
thus - focus of the WH (and the FAA) was not on safety first/abundance of caution, but "we know Boeing, they know us and are good to us - let's trust what they say"