The UNSC and its alphabet subsidiaries must simply be abolished. Let the UNGA exist as a debating club as it is now. Dealings among nations are generally done through alliances as has been the rule through centuries.
The UN as a whole is a useless intervention into the affairs of nations and is unable to affect the situations in world hot spots. N. Korea, Somalia, Syria , Iran, Yemen, Sudan, Ukraine, Russia, China are beyond the reach of the UN even under Chapter 6 and even if a veto did not exist. The UN does not have an army of its own.
Send the UN packing and out of the USA. It is a block of tyrannies and nothing more.