Obama's request for Congress to give him Authorization for Use of Military Force against Islamic State, like most Obama proposals, has failed to fully satisfy anybody. Since it is an Obama administration proposal, nobody should be surprised that it tries to skate adroitly among the holes in the ice.
Since the requested war powers would expire in three years, some of the dimmer lights in Congress may be able to convince themselves that they are regaining control of warmaking powers. That's not the case, of course, because without Congressional approval, the prez already is making war in Syria and Iraq, and nothing in the current proposal stops him from continuing to make war wherever and whenever it seems politically acceptable — based on his torturous interpretation of the 2001 resolution against Al Qaeda.
Nothing would stop Hillary either, and she is more of a hawk than Barack. Anyway, some meaningless piece of legislation will pass, supported by pitchfork waving Republicans and torch pumping Democrats, and Obama will have what he wants — a "bipartisan" endorsement of whatever he happens to do. When everything gets screwed up, as it has a way of doing in the Middle East, it won't be only his fault.