Scores of organizations representing a wide range of interests have denounced Republican obstructionism on a Supreme Court nominee, writing to the Senate Judiciary Committee's Republican members on Friday that its "unprecedented and destructive" decision represents "a dereliction of constitutional duty." The letter (pdf) to committee chair Charles Grassley (R-Iowa) and the other GOP members follows the body's letter earlier this week declaring, "This committee will not hold hearings on any Supreme Court nominee until after our next president is sworn in on Jan. 20, 2017," and stating that doing so was executing their "constitutional authority."