Admitting new Canadian or Mexican States would force us to address the issue of 'majority rule'.
Under our republican form of constitutional government, it does NOT rule.
-- It is long overdue to reassert that principle whether, ~or not~, we add new States.
Yeah, but the problem is that very shortly after the Mexes and Canucks are allowed to vote along with US Citizens, we will no longer HAVE a "constitutional republic". We'll be a "parliamentary democracy"--which has been the goal ever since Woodrow Wilson was president. The Constitution will be kaput.