want of integrity

References in classic literature ?
The convention might with propriety have meditated the punishment of the Executive, for a deviation from the instructions of the Senate, or a want of integrity in the conduct of the negotiations committed to him; they might also have had in view the punishment of a few leading individuals in the Senate, who should have prostituted their influence in that body as the mercenary instruments of foreign corruption: but they could not, with more or with equal propriety, have contemplated the impeachment and punishment of two thirds of the Senate, consenting to an improper treaty, than of a majority of that or of the other branch of the national legislature, consenting to a pernicious or unconstitutional law -- a principle which, I believe, has never been admitted into any government.