The United States of America is a Republic not a Democracy

So my opponent has decided that I never made it clear that I was supposed to prove the U. S was a republic not a democracy. But in his standards it is impossible to win. In my first paragraph of round I clearly state that I am arguing that the US is a republic, and my opponent is arguing it is a democracy. How this gives leeway for him to argue that he can win by jus proving that it shares certain elements, is not what I had stated, and what he refuse's to accept I stated, instead interpreting the entire debate in a completely different way adding what he has to do. SO I will stand by what I said in that unless he prove that the USA is a democracy, then he loses. And unless I'm able to prove that the U. S. is a republic then I lose, simple. Now I will show what elements the USA shares with a republic, and once again show the differences. The U. S. in definition is a Constitutional Republic. Wikipedia describes a Constitutional Republic as a, "A constitutional republic is a state where the head of state and other officials are elected as representatives of the people, and must govern according to existing constitutional law that limits the government's power over citizens. In a constitutional republic, executive, legislative, and judicial powers are separated into distinct branches and the will of the majority of the population is tempered by protections for individual rights so that no individual or group has absolute power. The fact that a constitution exists that limits the government's power makes the state constitutional. That the head(s) of state and other officials are chosen by election, rather than inheriting their positions, and that their decisions are subject to judicial review makes a state republican; should the judicial review be maximized. " If you say that Wikipedia is not a reliable source just look at round one in which my opponent uses Wiki therefore allowing me to use it as a source. The entire definition fits the United States. We elect our rep. and other officials, and they must govern according to law, in which they create laws only if they do not go against the Constitution. An example in the U. S. would be if someone tried to pass a bill that limits free speech, it would not be allowed because it goes against the Consitution. This is a clearr difference between the definition we have presented in a democracy is that a democracy is that a a democracy does not contain a Constitution that limits the powers of the government. The definition even states that it contains 3 branches, as witht he U. S. A. Also our heads of state are elected and does not automatically gain it. I presented a debate on whether the U. S. is a republic or a democracy, my opponet admits the U. S. A is a republic when in round 1 he states "The USA is undoubtedly a republic. " What else do I need to prove, when it fits all the definitions of a republic, my opponet admits its a republic, and there are differences between the 2 forms of government that are made clear. So in my closing argument I state that unless you believe that just because my opponet can show a single similarity of voting, then auotmaically it is not a republic and then he turns around and says it is a republic, yet stating it isn't, then my opponet has not made it clear what he is arguing, and therefore has lost. My opponets refusal to accept the guidlines on the basis a basis that I never stated it, and I did, is nto an excuse. The tititle is not a double negative, it is a clear choice between republic or democracy, it is not between republic, or both.