I believe Congress would have to impeach him first. Here in Kentucky, the Kentucky Supreme Court held that the Governor was immune from criminal prosecution until removed from office, and that kind of immunity probably applies to the Presidency as well. Nevertheless, there is no excuse for why the House never issued subpoenas to get Obama’s records.
If that’s the case then this country has never been anything but a criminal enterprise.
Was Blago removed from office before being arrested?
This is a very serious question and NOT hypothetical: What if all the members of Congress were arrested at the same time?