The Prime Directive

He could have said: We understand that a U.S. senator’s first duty is to represent the people of his state and that their interests occasionally might conflict with those of a special interest group such as ours. We would expect Richard Mourdock to vote in the interests of his constituents in those circumstances. [More]

Except that wouldn't be true.

His first duty is keeping his oath by legislating in accordance with the Constitution. And Lugar has betrayed his.