Bernie can do it despite this scam orchestrated in the neoliberal-con 'D' Vichy party, it's current smooth-lying 'front-man' and its selected Empress in waiting:
Obama's weekend scam, reminds me of "Weekend with Bernie", in that what Obama is doing to Bernie Sanders is a media/propaganda scam of the highest order --- combining his emotive anti-child killing performance, his Friday NYT OpEd, and his last SOTE (State of the Empire) speech --- to make sure Bernie is dead and to allow Empress-select Killary to be guaranteed of succession to figure-head leadership of this Disguised Global Capitalist Empire, which is nominally HQed in, and merely 'poses' as our former country.
By throwing out this 'red herring' of demanding that the candidate he supports having to agree with the one 'single-issue' of standing tall on demanding only that domestic gun manufacturers not have immunity on small arms they make and sell in the U.S., Obama is sealing Bernie's fate and insuring Killary's success --- since this 'one issue' is the only one single 'identity issue' that Bernie can't dodge, even if he tries to, because most people already know that Bernie voted to allow immunity, and Killary already has the hook in Bernie on this one domestic issue.
Obama is essentially (and The Empire thinks inexorably) insuring that the Empire's first choice for continued success beyond 2016, faux-Empress/president Killary (or, 'the first woman president' as the media/propaganda-sector of the DGCEmpire will title her) can insure that the potentially dangerous and likely 'doesn't play well with others' Empire, "Mr. Sanders never comes to Washington".
And Bernie, as I told him in Rochester NH, "will not get through this thing without exposing, publicly 'calling-out', and non-violently confronting this Disguised Global Capitalist Empire --- which can only and easily be defeated simply by ripping off it's mask".