Joseph Story,
Watson v. Mercer — Opinion of the Court
“ It is not sufficient to allege, that the constitution has been violated. Courts will not declare laws unconstitutional for light or trivial causes. 'This power,' says chief justice Tilghman, 3 Serg. and R. 73, 'is a power of high responsibility, and not to be exercised but in cases free from doubt.'But the inquiry is important in another sense; because, if the act of the legislature of Pennsylvania divests rights which are vested by law in an individual, if it does not violate a contract, it has nothing to do with the constitution of the United States. ”
