George Sutherland, Magnano Company v. Hamilton — Opinion of the Court
“ That the tax is for a public purpose is equally clear, since that requirement has regard to the use which is to be made of the revenue derived from the tax, and not to any ulterior motive or purpose which may have influenced the Legislature in passing the act. And a tax designed to be expended for a public purpose does not cease to be one levied for that purpose because it has the effect of imposing a burden upon one class of business enterprises in such a way as to benefit another class. ”
