For starters, let's elect officials who would stop transferring federal tax dollars to the U.N. and reward those who are currently in office and make such an effort with re-election (such as Congressman Ron Paul).
The UN would have neither the ability nor the gall to demand any money from the American People if we were to cut off this parasitical drain on our earnings.
Defund the UN from the U.S. budget, and pass along the savings in an income tax elimination.