"Attempts to enforce by legal sanctions, acts obnoxious to so great a proportion of Citizens, tend to enervate the laws in general, and to slacken the bands of Society. If it be difficult to execute any law which is not generally deemed necessary or salutary, what must be the case, where it is deemed invalid and dangerous? And what may be the effect of so striking an example of impotency in the Government, on its general authority?"