Summary

Portrait of William Howard Taft William Howard Taft Nigro v. United States — Opinion of the Court

The habit of smoking tobacco is often deleterious. Many think it ought to be suppressed. The craving for diamonds leads to extravagance, and frequently to crime. Silks are luxuries, and their use abridges the demand for cotton and wool. Those who sell tobacco, or diamonds, or silks may be taxed by the United States. But, surely, a provision in an act laying such a tax which limited sales of cigars, cigarettes, jewels, or silks to some small class alone authorized to secure official blanks would not be proper or necessary in order to enforce collection.
Source: Wikisource

Portrait of William Howard Taft William Howard Taft Nigro v. United States — Opinion of the Court

In this case, the qualification of the right of a resident of a state to buy and consume opium or other narcotic without restraint by the federal government is subject to the power of Congress to lay a tax by way of excise on its sale. Congress does not exceed its power if the object is laying a tax and the interference with lawful purchasers and users of the drug is reasonably adapted to securing the payment of the tax.
Source: Wikisource

Portrait of William Howard Taft William Howard Taft Nigro v. United States — Opinion of the Court

If they were to attempt to sell such drugs the necessity for an order form from the would-be purchaser would embarrass the illegal sale, for the participants would hesitate to make a record of the transaction. Thus the operation of section 2 in preventing an individual not a registered dealer or physician from acquiring the drug other than by an order form or a prescription is directly related to tax enforcement, because such drugs are not necessarily consumed by the purchaser but may be peddled or sold illegally.
Source: Wikisource

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