the union or not. Minimum wage Most Republicans oppose increases in the minimum wage, believing that such increases hurt businesses by forcing them to cut and outsource jobs while passing on costs to consumers. Environmental policies Historically, progressive leaders in the Republican Party supported environmental protection. Republican President Theodore Roosevelt was a prominent conservationist whose policies eventually led to the creation of the National Park Service. While Republican President Richard Nixon was not an environmentalist, he signed legislation to create the Environmental Protection Agency in 1970 and had a comprehensive environmental program. However, this position has changed since the 1980s and the administration of President Ronald Reagan, who labeled environmental regulations a burden on the economy. Since then, Republicans have increasingly taken positions against environmental regulation, with many Republicans rejecting the scientific consensus on climate change. In 2006, then-California Governor Arnold Schwarzenegger broke from Republican orthodoxy to sign several bills imposing caps on carbon emissions in California. Then-President George W. Bush opposed mandatory caps at a national level. Bush's decision not to regulate carbon dioxide as a pollutant was challenged in the Supreme Court by 12 states, with the court ruling against the Bush administration in 2007. Bush also publicly opposed ratification of the Kyoto Protocols which sought to limit greenhouse gas emissions and thereby combat climate change; his position was heavily criticized by climate scientists. The Republican Party rejects cap-and-trade policy to limit carbon emissions. In the 2000s, Senator John McCain proposed bills (such as the McCain-Lieberman Climate Stewardship Act) that would have regulated carbon emissions, but his position on climate change was unusual among high-ranking party members. Some Republican candidates have supported the development of alternative fuels in order to achieve energy independence for the United States. Some Republicans support increased oil drilling in protected areas such as the Arctic National Wildlife Refuge, a position that has drawn criticism from activists. Many Republicans during the presidency of Barack Obama opposed his administration's new environmental regulations, such as those on carbon emissions from coal. In particular, many Republicans supported building the Keystone Pipeline; this position was supported by businesses, but opposed by indigenous peoples' groups and environmental activists. According to the Center for American Progress, a non-profit liberal advocacy group, more than 55% of congressional Republicans were climate change deniers in 2014. PolitiFact in May 2014 found "relatively few Republican members of Congress ... accept the prevailing scientific conclusion