Foreign commerce
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Commerce or trade between the United States and foreign countries.
Co.m. v. Housatonic R. Co., 148 Mass. 264, 9 N. B. 547; Foster v. New Orleans, 94 U. S. 246 , 24 L. Ed. 122.
The term is sometimes applied to commerce between ports of two sister states not lying on the same coast, e. p., New York and San Francisco.