The "Lieberman-Warner Climate Security Act" proposes the reduction of greenhouse gas emissions which would also reduce the effects of global warming. This act is sustained by almost all major national environmental groups and was introduced by U.S. Sens. Joseph I. Lieberman, Ind-Conn., and John W. Warner, R-Va.

According to the Oak Ridger, the Senate is supposed to debate the act this week.

The emissions trading or cap-and-trade regulation will set a price on carbon dioxide and companies will be given emission permits with the specification of the amount of pollutant that they are allowed to produce. The total of the credits mustn’t exceed the limit or the cap. Some companies will pollute less and some more. Therefore, the companies which will pollute less can give a part of their credits to companies who need to increase their emissions.

The purpose of this law is to reduce emissions by 70% below 2005 levels.

Presidential candidates, Environmental Defense, the Natural Resources Defense Council and the League of Conservation Voters have expressed their support for the legislation.

On the other hand, Friends of Earth said that the law was too weak.

According to the Daily Green, an analysis made by the Center for American Progress reported that emission reductions could be put off until 2025 and the Environmental Protection Agency estimated that this act would cut emissions 25% below 1990 levels by 2050.

The United Nation wants a 50% cut below 1990 levels worldwide by 2050.