Last month, the Senate voted to confirm Kenneth L. Marcus as assistant secretary for civil rights in the Department of Education. The vote was 50-46, with not one Democrat supporting him—a point I will return to presently. In that position, he will head up the Department’s Office for Civil Rights (OCR). This is the second time Marcus has held the post since he was “delegated the authority” to run OCR during the administration of George W. Bush. During his career, Marcus, a University of California-trained lawyer, has also served as staff director of the United States Commission on Civil Rights...