Hill v. Wallace, 259 U.S. 44 (1922), was a U.S. Supreme Court decision overturning the legality of the Futures Trading Act of 1921.^[1] The law, approved August 24, 1921,^[2] by the U.S. Congress attempted to institute Federal regulation of grain futures contract trading by imposing a prohibitive tax on futures contracts traded on any market other than those that met the statute's requirements and were regulated by the Secretary of Agriculture. The court found it was an unconstitutional exercise of the taxing power of Congress. Congress responded to the Court's decision by passing the Grain Futures Act in September 1922 based on the Commerce Clause. The Grain Futures Act was held to be constitutional by the Court in Board of Trade of City of Chicago v. Olsen (1923)

Hill v. Wallace
Supreme Court of the United States
Argued January 11, 1922 Decided May 15, 1922
Full case name	Hill et al. v. Wallace, Secretary of Agriculture et al.
Citations	259 U.S. 44 (more) 42 S. Ct. 453; 66 L. Ed. 822; 1922 U.S. LEXIS 2459
Holding
The Futures Trading Act of 1921, approved August 24, 1921. 42 Stat. 187, c. 86, which attempted to institute Federal regulation of grain futures contract trading by imposing a prohibitive tax on futures contracts traded on any market other than those that met the requirements of the statute and were regulated by the Secretary of Agriculture was an unconstitutional exercise of the taxing power of Congress.
Court membership
Chief Justice William H. Taft Associate Justices Joseph McKenna · Oliver W. Holmes Jr. William R. Day · Willis Van Devanter Mahlon Pitney · James C. McReynolds Louis Brandeis · John H. Clarke
Case opinion
Majority	Taft, joined by Brandeis
Laws applied
US Constitution Article I, Sec. 8.