The status of alien enemies was first considered in connection with the passage of the Alien Act of 1798,[1317] whereby the President was authorized to deport any alien or to license him to reside within the United States at any place to be designated by the President. Critics of the measure conceded its constitutionality so far as enemy aliens were concerned, because, as Madison wrote, "The Constitution having expressly delegated to Congress the power to declare war against any nation, and, of course, to treat it and all its members as enemies."[1318] The substance of this early law was reenacted during the first world war. Under it the President is authorized, in time of war, to prescribe "the manner and degree of the restraint to which [alien enemies] shall be subject and in what cases, and upon what security their residence shall be permitted," or to provide for their removal from the United States.[1319] This measure was held valid in Ludecke _v._ Watkins.[1320] EMINENT DOMAIN An often-cited dictum uttered shortly after the Mexican War asserted the right of an owner to compensation for property destroyed to prevent its falling into the hands of the enemy, or for that taken for public use.[1321] In United States _v._ Russell,[1322] decided following the Civil War, a similar conclusion was based squarely on the Fifth Amendment, although the case did not necessarily involve the point. Finally, in United States _v._ Pacific Railroad,[1323] also a Civil War case, the Court held that the United States was not responsible for the injury or destruction of private property by military operations, but added that it did not have in mind claims for property of loyal citizens which was taken for the use of the national forces. "In such cases," the Court said, "it has been the practice of the government to make compensation for the property taken. * * *, although the seizure and appropriation of private property under such circumstances by the military authorities may not be within the terms of the constitutional clauses."[1324] Meantime, however, in 1874, a committee of the House of Representatives, in an elaborate report on war claims growing out of the Civil War, had voiced the opinion that the Fifth Amendment embodied the distinction between a taking of property in the course of military operations or other urgent military necessity, and other takings for war purposes, and required compensation of owners in the latter class of cases.[1325] In determining what constitutes just compensation for property requisitioned for war purposes during World War II, the Court has assumed that the Fifth Amendment is applicable to such takings.[1326] Clause 15. _The Congress shall have Power_ * * * To provide for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions.