Nos. 7295, 7296. Argued November 12, 1956. Decided December 17, 1956. As Amended January 7, 1957. Lino A. Graglia, Attorney, Department of Justice, Washington, D.C. (George Cochran Doub, Asst. Atty. Gen., Walter E. Black, Jr., U.S. Atty., Baltimore, Md., and Samuel D. Slade, Attorney, Department of Justice, Washington, D.C., on brief), for U.S. Randall C. Coleman, Jr., Baltimore, Md. (Ober, Williams, Grimes Stinson, Baltimore, Md., on brief), for Seaboard Surety Co. and National Surety Corp. Before

It shall be unlawful for any person, including the owner, agent, consignee, charterer, master, or commanding officer of any vessel or aircraft, to pay off or discharge any alien crewman, except an alien lawfully admitted for permanent residence, employed on board a vessel or aircraft arriving in the United States without first having obtained the consent of the Attorney General. If it shall appear to the satisfaction of the Attorney General that any alien crewman has been paid off or discharged in