Kirsten Powers writes in a USA Today op-ed:
When asked by ABC's George Stephanopoulos about Boehner's claim that the president had exceeded his executive authority, Obama retorted, "I'm not going to apologize for trying to do something while they're doing nothing." He went on to explain that his administrative actions regarding immigration were OK because the GOP wouldn't work with him and "the majority of the American people want immigration reform done."
Notice that the former constitutional law professor did not make a substantive legal case in defense of his executive power grabs. He merely stated that what he did was popular, ergo his extra-constitutional actions are fine. A more reassuring answer would include explaining how his actions are consistent with the Constitution....
Like a handful of liberal voices, at the same time I support most of Obama's domestic policy initiatives, including those he accomplished through executive action, I can't support the way he has put them in place. We elected Obama president, not emperor.