Benjamin N. Cardozo,
Steward Machine Company v. Davis…
“ The tax, which is described in the statute as an excise, is laid with uniformity throughout the United States as a duty, an impost, or an excise upon the relation of employment.1. We are told that the relation of employment is one so essential to the pursuit of happiness that it may not be burdened with a tax. Appeal is made to history. ”
