The United Nations should be put on a “zero-based participation budget”. That is, rather than keep belonging to it because it made sense during the Cold War, the US should re-evaluate our participation each year.
And if there is no good reason to stay a member, we should drop out.
I submit that the reasons to stay a member are vastly outweighed by those opposing membership.
We don’t need to abolish the UN. Just have the US withdraw participating and all funding. They have the right to free speech and free assembly, but not on our dime.