When it comes to the United States, there's one thing and one thing only that matters to the United Nations: $3 billion. That's what we give them every year in funding, which is far more than any other nation on this Earth. It accounts for more than 20 percent of the UN's total budget, and an organization that lives on salaries, accommodations and travel expenses for its bureaucracy will find itself in a real fix if it's major funder decides to stop or reduce the checks.