Tesla founder Elon Musk stepped down from the tech advocacy group FWD.us on Friday.
Musk was a backer of FWD.us when it was launched in April. The public interest group is funded by many tech heavy hitters like Microsoft's (Fortune 500) Bill Gates, , LinkedIn' (s Reid Hoffman, ) Google' (Fortune 500)s Eric Schmidt and , Yahoo' (Fortune 500)s Marissa Mayer. ,
In order to gain momentum in its fight to change U.S. immigration policy, the group ran advertisements for lawmakers who support drilling in the Arctic National Wildlife Refuge and the Keystone XL pipeline -- two hot-buttom environmental issues.
Musk left the group soon after these ads were aired. As head of an electric car company, he has developed a reputation as a champion of clean energy. Musk did not immediately respond to requests for comment.
FWD.us said it still has many backers.
"We recognize that not everyone will always agree with or be pleased by our strategy -- and we're grateful for the continued support of our dedicated founders and major contributors," said Kate Hansen, a FWD.us spokeswoman.
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