The U.N. needs to be located somewhere else than on the soil of the World's greatest superpower. I would suggest a more neutral and peaceful location such as: Sweden, Switzerland, Canada, Belgium, Holland, Singapore, Norway, Denmark...

Doing simply that would render the U.N. a far better and fairer representative of the World community of nations than it is now. (And it would also probably result in the USA almost completely ignoring the very existence of the U.N.!)

The USA is under the impression that the U.N. exists for one reason only: to be its rubber stamp and its errand boy overseas. That is not the purpose of the U.N. The U.N. should be an international force to restrain aggressive superpowers, not to act as their proxy.