MR. JUSTICE BRANDEIS delivered the opinion of the Court.
A statute of Arkansas provides that one who sells gasoline to be used by the purchaser in motor vehicles on highways of the State "shall collect from such purchaser, in addition to the usual charge therefor, the sum of one cent (1¢) per gallon for each gallon so sold;" that the dealer shall register with the county clerk in every county in which he does business; shall file each month a report of the sales made within the county during the preceding month; shall personally pay over each month the amount of the taxes accrued thereon; and that failure to file the report or to pay such amount is a misdemeanor which subjects the dealer to a fine. Act No. 606, March 29, 1921, Acts of Arkansas, 1921, p. 685. To enjoin the enforcement of the law the Pierce Oil Corporation brought, in the federal court for Western Arkansas, this suit against taxing officials. The trial court dismissed the bill, without opinion. Its decree was affirmed by the Circuit Court of Appeals. 282 Fed 253. The case is here under § 241 of the Judicial Code. Whether the statute is valid is the sole question for decision. The claims are that the statute violates the due process clause of the Federal Constitution; and that it is void for uncertainty.
The claim that the law is void for uncertainty is not urged as a violation of the due process clause. Compare International Harvester Co. v. Kentucky, 234 U.S. 216; Fox v. Washington, 236 U.S. 273. The argument, that there inheres in the statute such uncertainty as to render it a nullity, is answered by the fact that, since the judgment was entered in the trial court, all uncertainty has been removed by the decision of the highest court of the State in Standard Oil Co. v. Brodie, 153 Ark. 114. There the act was construed as requiring sellers to collect and pay the tax only on such gasoline as they have reason to believe purchasers from them will use in motors on the highways.