China has over a billion people, but giving its government, a dictatorship, a vote in any body is obscene, and calls into question the votes of that body. Tiny Lichtenstein, however, deserves a vote, as its government does not stay in power through murder and intimidation.
The Senate was designed to give small population states a disproportionate share of the vote. That's because ...
(whose power is tempered by the House and the other 2 branches of government).
The General Assembly is broken by design. To be fair, its power should be tempered by at least two other bodies, one based on population and the other based on GDP. Actually, I'm not particularly interested in trying to fix the UN and I wish the US would withdraw from it.