Plenty of blame for both sides here, I've heard a whole bunch of immigrant bashing at, well... every Republican event in the last 5 years. Way more than Obama typically does.

My read on it was Obama stepped up enforcement for political cover when he gets accused of things like that by the Republicans, which is still plenty of stupid and weak on his part. Especially since they'll never agree to actually do comprehensive immigration reform if it would be perceived as a victory for Obama.