CHARLOTTESVILLE, Va. (AP) — He’s a prize-winning presidential historian who wrote an entire biography of Thomas Jefferson . But even Jon Meacham needs to think for a moment before defining what it means to be a “Jeffersonian.” “Well for a long time, before the civil rights movement, it meant to be more inclined toward states’ rights and limited government,” says Meacham, the National Constitution Center’s Semiquincentennial Scholar. He then pauses, and asks to start over, recalling how