sentences:  He alleged that the regulation invoked by the Secretary, 22 CFR 51.70 (b)(4)(1980), was not authorized by Congress and was invalid; that the regulation was impermissibly overbroad; that revocation prior to a hearing violated his Fifth Amendment right to procedural due process; and that the revocation violated a Fifth Amendment liberty interest in a right to travel and a First Amendment right to criticize Government policies.He sought declaratory and injunctive relief, and he moved for summary judgment on the question of the authority to promulgate the regulation and on the constitutional claims.For purposes of that motion, Agee conceded that his activities were causing or were likely to cause serious damage to the national security or foreign policy of the United States.