William R. Day,
Louisiana ex rel. Hubert v. Mayor and Council of the City of New Orleans…
“ The contract creditors of the police board were entitled to rely upon the benefit of the laws imposing taxation to make their obligations effectual. They could not, constitutionally, be deprived of such benefit. While it is true that the police board made the contracts, the only means of keeping them was through the exercise of the power of taxation conferred by law upon the city. The city exerted its power, as required by law, levied and collected the taxes, but applied them to other purposes, and has failed to turn them over upon demand. We think the power to levy these taxes still exists. ”
