Jonathan Elliot, Debates in the Several State Conventions on the Adoption of the Federal Constitution (1907)
“ The states will never give up all power over trade. An enumeration of particular articles would be difficult, invidious, and improper. Mr. MADISON. As we ought to be governed by national and permanent views, it is a sufficient argument for giving the power over exports, that a tax, though it may not be expedient at present, may be so hereafter. A proper regulation of exports may, and probably will, be necessary hereafter, and for the same purposes as the regulation of imports, viz., for revenue, domestic manufactures, and procuring equitable regulations from other nations. ”
