Public Law 114-216 is a federal law of the United States that regulates GMO food labeling. It was enacted on July 29, 2016 when President Obama signed then Senate Bill 764 (S.764). While the law is officially termed A bill to reauthorize and amend the National Sea Grant College Program Act, and for other purposes, it evolved over time into "the legislative vehicle for a measure concerning bioengineered food disclosure",[1] which opponents have called the "DARK Act", an acronym for "Deny Americans the Right to Know Act".[2][3][4]