On April 11, 2013, Zuckerberg led the launch of a 501(c)(4) lobbying group called FWD.us. The founders and contributors to the group were primarily Silicon Valley entrepreneurs and investors, and its president was Joe Green, a close friend of Zuckerberg. The goals of the group include immigration reform, improving the state of education in the United States, and enabling more technological breakthroughs that benefit the public, yet it has also been criticized for financing ads advocating a variety of oil and gas development initiatives, including drilling in the Arctic National Wildlife Refuge and the Keystone XL pipeline. In 2013, numerous liberal and progressive groups, such as The League of Conservation Voters, MoveOn.org, the Sierra Club, Democracy for America, CREDO, Daily Kos, 350.org, and Presente and Progressives United agreed to either pull their Facebook ad buys or not buy Facebook ads for at least two weeks, in protest of Zuckerberg ads funded by FWD.us that were in support of oil drilling and the Keystone XL pipeline, and in opposition to Obamacare among Republican United States senators who back immigration reform.