Yesterday, 22 April 2009, Members of the US House of Representatives Earl Blumenauer (D-Ore.) and Donald Payne (D-N.J.) introduced the Senator Paul Simon Water for the World Act, the successor to the 2005 Senator Paul Simon Water for the Poor Act. A bill is intended to commit the US government to provide 100,000,000 people around the world with first-time access to safe drinking water and sanitation on a sustainable basis by 2015.
The legislation had previously been introduced to the US Senate on 17 March 2009 by Senators Dick Durbin, Patty Murray and Bob Corker.
You can find the statements of Representatives Blumenaur and Senator Durbin on their legislation.