Massachusetts Lobstermen's Association v. Ross (Docket No. 1:17-cv-00406-JEB) is a United States District Court case in the District of Columbia in which the court determined whether or not a President may establish a marine national monument, the Northeast Canyons and Seamounts Marine National Monument, under the authority of the Antiquities Act of 1906. The case represents the first time that the President's authority to create an offshore marine monument under the Act was directly challenged in court. While the District Court upheld the President's authority to designate the monument under the authority bestowed by the Antiquities Act, the case was appealed to the D.C. Circuit (Docket No. 18-05353) and awaits further judicial review.