Opinion of the Court
188 Wash. 2d 55, 58, 392 P. 3d 1014, 1015 (2017). And that court, agreeing with Cougar Den, upheld the Superior Court’s determination of pre-emption. Id., at 69, 392 P. 3d, at 1020.
The Department filed a petition for certiorari asking us to review the State Supreme Court’s determination. And we agreed to do so.
II
A
The Washington statute at issue here taxes the importation of fuel by public highway. The Washington Supreme Court construed the statute that way in the decision below. That court wrote that the statute “taxes the importation of fuel, which is the transportation of fuel.” Ibid. It added that “travel on public highways is directly at issue because the tax [is] an importation tax.” Id., at 67, 392 P. 3d, at 1019.
Nor is there any reason to doubt that the Washington Supreme Court means what it said when it interpreted the Washington statute. We read the statute the same way. In the statute’s own words, Washington “impose[s] upon motor vehicle fuel licensees,” including “licensed importer[s],” a tax for “each gallon of motor vehicle fuel” that “enters into this state,” but only “if… entry is” by means of “a railcar, trailer, truck, or other equipment suitable for ground transportation.” Wash. Rev. Code §§82.36.010(4), 82.36.020(1), (2), 82.36.026(3). As is true of most tax laws, the statute is long and complex, and it is easy to stumble over this technical language. But if you are able to walk slowly through its provisions, the statute is easily followed. We need take only five steps.
We start our journey at the beginning of the statute which first declares that “[t]here is hereby levied and imposed upon motor vehicle fuel licensees, other than motor vehicle fuel distributors, a tax at the rate… pro-
