It's likely to change federally soon enough; by the end of 2016 (and thus before the new president is sworn in) it's likely a majority of states will have it legal for medical or recreational purposes, and that's assuming no surprise states either (and both Utah and Texas, considered "not a chance in hell" states are seriously debating medical and decrim bills). If even a handful of unexpected states join, the nation would have a STRONG majority pushing for marijuana reform.
Let's not forget, Alaska was considered an outside possibility up until it actually happened. It's a heavily Republican state, as are Texas and Utah. Even a couple major red states would force the Republican party to change their stance, especially once those red states see the tax revenue from marijuana (if there's one thing politicians love, it's money). By January of 2017, the new president may have no choice but to AT LEAST continue Obama's "hands off" Federal policy or face political suicide, regardless of party. By then, there might be enough state money in it to make rescheduling it a real priority.