But problem there is that O put himself in an untenable position. Either he admits he was involved in F&F, with the attendant charges of accessory before the fact in the murder of two federal agents, or he admits to using the EP erroneously in order to obstruct Congress. Either way screams impeachment to me...
The only untenable position, IMHO, is Barry's careless and flip way he attempts to use EP. The political fallout from that carelessness will go much farther with Congress' disassociation with Barry than any attempt made to impeach him.
This does not fall under "high crimes and misdemeanors" in my view -- UNLESS he was directly involved with the cover-up, which I sincerely doubt. Holder's involvement with a cover-up is doubtful too, because these ****sticks are all about "plausible deniability". It's their first reaction to any crisis -- "How can I deal with this and not officially know a damned thing about it?" The usual answer is to find an underling who is expendable and tag him/her with the responsibility of getting the issue "fixed".
Tricky Dick tried that shit and it blew up in his face, because he'd forgotten about the surreptitious taping that was going on.