Mr.Obama and Democrats in Congress are backing a "cap and trade" bill, which aims to cut greenhouse gas emissions 17 percent by 2020.

VOA: standard.2009.05.30

But the bill to open such trade still faces heavy opposition in Congress and probably will not be debated until after the legislative body's August break.

VOA: standard.2010.07.29

In the United States, a vote in Congress is expected in the coming weeks that could authorize up to $4,500 to individuals who trade in vehicles in what has become known as the "cash for clunkers" bill.

VOA: standard.2009.05.18