[betterunix]

"why would I want the US to control the internet as opposed to the UN?"

UN control of the Internet means that the governments of China, Russia, and numerous other governments that are far worse than the US government would be in a position to influence Internet policy. Some governments want to add a structure of fees to the Internet, so that visiting websites would involve paying every country through which your packets travel. Some want censorship to be built-in, so that their political dissidents cannot simply use VPNs, proxy servers, or Tor to evade national firewalls.

To put it another way, the US government's approach to censorship of the Internet is mostly a combination of rare and costly raids on server rooms, hijacking domain names, and arresting people who download illegal pornography. China's approach is to have tens of thousands of government workers laboring 24 hours per day to identify websites that go too far in contradicting the Communist party's official policies, maintaining an enormous national firewall, and attacking Tor network connections to prevent people from evading the firewall -- and they also raid server rooms and arrest people who possess the wrong information. Do you really want to let China have any sort of power over the Internet?