Though both parties have been terrible about blocking judicial nominations, President Obama is correct that GOP obstructionism is "unprecedented." Sheldon Goldman, a professor of political science at the University of Massachusetts, developed an "Index of Obstruction and Delay." The rating for the most recent Congress was the highest ever recorded. "It approached total obstruction or delay," he told the Washington Post. The Congressional Research Service also recently concluded: "President Obama is the only one of the five most recent presidents for whom, during his first term, both the average and median waiting time from nomination to confirmation for circuit and district court nominees was greater than half a calendar year."