With actual investigations going on regarding HILL and how BO's administration weaponized Federal agencies to go after Trump, BO can STILL be impeached even though he's done as President....and if enough proof of his involvement (there are already emails between HILL on her private server and him at the WH) is found, he, as a private citizen now, he could be indicted/charged. He stated publicly that he didn't find out about her server until it was in the 'news'....so 'coverup' is a possibility since he also campaigned for her and wanted a particular outcome of that election. He also was out there saying publicly that Trump wasn't 'wiretapped' and that "no outside country could interfere with the USA election" even though he was warned about it happening in 2013 by Nunes.