Notice Clinton doesnt address the specifics of the deal at all, as opposed to Chuck Schumer who did so at considerable length in his rejection of the pact. Its virtually impossible to support rationally this absurd agreement in which the U.S. gave in on practically everything and then donated $150 billion to the ayatollahs for the privilege of doing so.
Nevertheless, Hillary has no choice but to support it for two reasons. One: Bernie Sanders is backing it and he is getting all the popular attention on the Democratic side. But thats minor and perhaps transitory. The major reason is clear and deserves a separate paragraph.
Hillary Clinton is in such deep legal trouble over her emails that she needs the backing of Obama to survive. He controls the attorney generals office and therefore he controls Hillary (and her freedom) as long as he is president. Everything she says and does in the presidential campaign must be viewed against this reality. This is further enhanced by her need to hold together Obamas electoral coalition. But thats the least of it compared to having erased 32,000 emails, most of which were undoubtedly government property, and done who-knows-what to the server, something that not even Nixon would ever have dreamed of.
Meanwhile, Hillarys and other Democrats support for the Iran deal has now basically been reduced to this: It may not be a terrific, but were stuck with it and it would be a huge embarrassment to vote it down now. Moreover, the sanctions could never be reinstated, so whats the point? Oh, and by the way, if you dont agree, youre a warmonger.