258 U.S. 126 (1922).

[166] Ex parte Levitt, 302 U.S. 633 (1937). _See_, however,
Massachusetts State Grange _v._ Benton, 272 U.S. 525 (1926), where the
Supreme Court, though affirming the dismissal of a suit to enjoin a
day-light-saving statute, nonetheless, sustained the jurisdiction of the
district court to entertain the suit.

[167] Alabama Power Co. _v._ Ickes, 302 U.S. 464, 480-481 (1938).

[168] 333 U.S. 203 (1948).

[169] 342 U.S. 429 (1952). _See_ p. 763 (Amendment I).

[170] 6 Wall. 50, 64 (1868). _See also_ State of Mississippi _v._
Johnson, 4 Wall. 475 (1867).

[171] 6 Wall. at 76.

[172] 262 U.S. 447 (1923).

[173] 42 Stat. 224 (1921).

[174] 262 U.S. 447, 484-485. _See also_ New Jersey _v._ Sargent, 269
U.S. 328, 338-340 (1926), where the Court refused jurisdiction of a suit
to enjoin the federal water power act because of its effect on the
conservation of potable waters in New Jersey. A similar situation arose
in Arizona _v._ California, 283 U.S. 423, 450 (1931), where the Court
declined to take jurisdiction of an injunction suit to restrain the
Secretary of the Interior and the five States of the Colorado River
Compact from constructing Boulder Dam.

[175] Georgia _v._ Pennsylvania R. Co., 324 U.S. 439 (1945).

[176] Missouri _v._ Holland, 252 U.S. 416 (1920).

[177] Georgia _v._ Tennessee Copper Co., 206 U.S. 230 (1907).

[178] Alabama State Federation of Labor _v._ McAdory, 325 U.S. 450, 461
(1945).

[179] Giles _v._ Harris, 189 U.S. 475, 486 (1903).

[180] 258 U.S. 158 (1922).

[181] Ibid. 162.

[182] 297 U.S. 288, 324 (1936).

[183] 274 U.S. 488 (1927).

[184] Ashwander _v._ Tennessee Valley Authority, 297 U.S. 288, 324
(1936).

[185] 283 U.S. 423 (1931).

[186] 330 U.S. 75 (1947).

[187] Ibid. 89-91. Justices Black and Douglas wrote separate dissents,
but each contended that the controversy was justiciable. Justice Douglas
could not agree that the men should violate the act and lose their jobs
in order to test their rights.

[188] Ex parte Steele, 162 F. 694, 701 (1908).

[189] Pennsylvania _v._ Wheeling & Belmont Bridge Co., 13 How. 518
(1852); United States _v._ Chambers, 291 U.S. 217 (1934); Mills _v._
Green, 159 U.S. 651 (1895); United States _v._ Evans, 213 U.S. 297
(1909).

[190] Mills _v._ Green, 159 U.S. 651 (1895). This case came to the
Supreme Court on appeal from a decree of the circuit court of appeals
dissolving an injunction restraining certain regis