Alaska Native and environmental advocacy groups on Wednesday sued President Donald Trump , seeking to block his efforts to expand offshore drilling in protected ocean areas.

The Natural Resources Defense Council, Earthjustice and the Alaska Wilderness League, among others, argue in a lawsuit filed in U.S. District Court in Alaska that Trump violated the Constitution with his executive order last week that could reverse a permanent ban on drilling in the Arctic and Atlantic oceans. In addition to Trump, the suit names Interior Secretary Ryan Zinke and Commerce Secretary Wilbur Ross as defendants.

What Trumps executive order tries to do is upset this protection take it away, said Erik Grafe, an attorney in Earthjustices Alaska office. So were suing to restore the protection before oil companies come rushing back into the Arctic.

Environmental advocates have been resisting the expansion of offshore drilling for years, citing major risks to marine life , coastal communities and the climate .