Although you may wish to pay attention to this one. I'm sure the usual suspects will dismiss this as Fox News propaganda and argue that none of these are actually illegal, but you might want to think about this a slightly different way. If George Bush were to have done the exact same things would you still be so blase and dismissive?
So courtesy of the Cato Institute, here are the Obama Administration's top ten Constitutional violations.
I might add lying under oath about Benghazi to a Congressional committee, and stonewalling Congressional investigations into governmental departments resulting in a contempt citation against Attorney General Holder. Maybe those don't count as 2013 actions since they happened earlier, but much of the lying was done or carried into the past year.