Kisor v. Wilkie, No. 18-15, 588 U.S. ___ (2019), was a US Supreme Court case related to the interpretation by an executive agency of its own ambiguous regulations. The case involved a veteran who had been denied some benefits from the United States Department of Veterans Affairs due to the agency's interpretation of its regulations. The case challenges the "Auer deference" established in the 1997 case Auer v. Robbins, in which the judiciary branch of the government normally defers to an agency's own interpretation of its own regulations in resolving matters of law. Lower courts, including the Federal Appeals Circuit Courts, ruled against the veteran, acknowledging the Auer deference.