[247] Ibid. 584.
[248] Ibid. 589-590.
[249] Ibid. 596.
[250] Wilmette Park District v. Campbell, 338 U.S. 411 (1949).
[251] See also [article I, section 9, clause 4].
[252] LaBelle Iron Works v. United States, 256 U.S. 377 (1921); Brushaber v. Union P.R. Co., 240 U.S. 1 (1916); Head Money Cases, 112 U.S. 580 (1884).
[253] Knowlton v. Moore, 178 U.S. 41 (1900).
[254] Fernandez v. Wiener, 326 U.S. 340 (1945); Riggs v. Del Drago, 317 U.S. 95 (1942); Phillips v. Commissioner of Internal Revenue, 283 U.S. 589 (1931); Poe v. Seaborn, 282 U.S. 101, 117 (1930).
[255] Florida v. Mellon, 273 U.S. 12 (1927).
[256] Downes v. Bidwell, 182 U.S. 244 (1901).