Should an unwarrantable measure of the federal government be unpopular in particular States, which would seldom fail to be the case, or even a warrantable measure be so, which may sometimes be the case, the means of opposition to it are powerful and at hand. The disquietude of the people; their repugnance and, perhaps, refusal to co-operate with the officers of the Union; the frowns of the executive magistracy of the State; the embarrassments created by legislative devices, which would often be added on such occasions, would oppose, in any State, difficulties not to be despised; would form, in a large State, very serious impediments; and where the sentiments of several adjoining States happened to be in unison, would present obstructions which the federal government would hardly be willing to encounter.