You've probably seen this kind of complaint before: the establishment of U.S. Constitution was done illegally under the Articles of Confederation. I will just give a brief sample from one web site:
"Therefore the delegates had exceeded their instructions and were acting illegally."
"The ratification procedure was patently illegal..."
"Some say bribery and other illegal or at least immoral tactics were used to push the Constitution through."
What few of these folks seem to make much of, though, is the fact that, per the previous constitution (you know, the one involving the king in parliament and all that), the Articles of Confederation were themselves pretty darned illegal, and seemed to be "pushed through" with a bunch of shooting.