USA Swimming is the national governing body for competitive swimming in the United States. It is charged with selecting the United States Olympic Swimming team and any other teams which officially represent the United States, as well as the overall organization and operation of the sport within the country, in accordance with the Amateur Sports Act. The national headquarters is located at the U.S. Olympic Training Center in Colorado Springs, Colorado.

The motto of these sport in USA is: "Build the base, promote the sport, achieve competitive success"

If you are interested in history of swimming of USA, click there:

http://www.usaswimming.org/ViewMiscArticle.aspx?TabId=1599&Alias=Rainbow&Lang=en&mid=7128&ItemId=3511

There are several parts and levels that make up USA Swimming. There is the National governing body (national) level, the Zone (regional) level, and the Local Swimming Committee (local/state) level.

Michael Phelp is considered to be the world's best swimmer.

It was really interesting for me to learn about his proffecional life, you can also find this information on this site:

http://www.buzzle.com/editorials/8-27-2004-58516.asp

All time top 100 in USA

http://www.usaswimming.org/DesktopDefault.aspx?TabId=1487&Alias=Rainbow&Lang=en