Honestly, if you live and work and pay taxes in the US, you kind of have an obligation to keep an eye on your government. It's just basic citizenship. The events you see on the news cannot be divorced from politics. Not even the sports or weather segments.

If politicians are doing things that stress you out or make you angry, would you really be better off staying uninformed? I'm not saying that Facebook is a good way to accomplish that, just that it's worth considering before you ask for technology to seal yourself off from political news altogether.