Not being USA-ian, I'm not sure what actions or statements are treason. But some of the Republican statements that have come out publicly against Obama are not only personally offensive but are against the State: i.e. Treasonous - that the opposition won't support a bill because they don't consider Obama capable. It was much worse than, implicating the majority that voted him in twice! But I forget the actual insult. I think Obama would of had more than enough to arrest the leadership of the Republican party for treasonous statements. Yet he has done nothing.
As for the Russians? Well history since WWII has clearly shown that Russia has used their gas pipelines, forcing nations into dependency, raising and lowering prices ad hoc, putting political and economic pressures on these now dependent countries. That was the bribe used against the Ukraine in late 2013 - cheap gas and billions of rubles for them to stay out of the EU.