50 years is a long way out ...
US politics changes very little: there will be (and has always been ...) two parties screaming at each other, each claiming the other will be the ruin of America. One will want more government control, the other will want less. One party will have a inority leader, the presidential barrier haven been broken quite a bit earlier. When to intervine will be a topic of debate, as well as the amount of allowed genertic alteration allowed of babies.
Hmmm, I pretty much see a utopian future.
(I'm not kidding.)