"Velma Hart, an Obama supporter who, employing an O'Donnellesque unidiomatic preposition, told the president she was 'exhausted of defending you.'"

Ha ha. James Taranto is, like me, distracted by the wrong preposition. (I said, about O'Donnell: "It bugs me more that she says 'dabbled into' than that she actually did it (or claimed to).") Taranto is writing about Margaret Carlson's response to Hart, which is important because Carlson "personifies liberal Beltway conventionality."