The United States is in transition between forms of government at this point, and has been since Nixon really, from a country governed by the Congress to one governed by an Imperial President. Obama made the largest incremental step in that transition when he made the statement that, "if Congress does not act then I will," and began issuing executive orders which directly contradicted laws passed and/or rejected by Congress.
Congress is finally waking up to the fact that it gave away more power than it meant to give to an Imperial Presidency and is trying to stage a coup against the current President by using the media, for the most part, and by distracting the public with domestic social issues. So, while the branches of government wage war with each other for control of government, a war which the Judicial branch has now illogically joined, the country is essentially ungovernable.
This results externally in an inability to make agreements with other nations and an equally ineffective military posture, and internally with ever increasingly open warfare between classes, ethnicities and genders, stoked by liberals in the guise of "social policy." We may be lucky enough to emerge from this without another civil war, but not if Democrats win control of Congress and impeach the sitting President as is their current plan.