The House is likely to remain Republican. Odds are that the Republicans will pick up the net of four seats they need to take control of the Senate. From there they will be in a position to wage war against Democratic constituencies by defunding or starving them.
The reelection of Obama will ensure the trajectory of the country changes forever. This will make conservatives political nihilists bent on revenge and destruction. Their America will be ending and they have no reason whatsoever to support your Amerika. The net effect will be to radically weaken the US.