After the House passed the American Clean Energy and Security Act in 2009, Obama sought to convince the Senate to pass the bill as well. The legislation would have required the US to cut greenhouse gas emissions by 17 percent by 2020 and by 83 percent by the middle of the 21st century. However, the bill was strongly opposed by Republicans and neither it nor a separate proposed bipartisan compromise ever came up for a vote in the Senate. The legislation would have required the US to cut greenhouse gas emissions by 17 percent by 2020 and by 83 percent by the middle of the 21st century. However, the bill was strongly opposed by Republicans and neither it nor a separate proposed bipartisan compromise ever came up for a vote in the Senate. In 2013, Obama announced that he would bypass Congress by ordering the EPA to implement new carbon emissions limits.