On March 17, 2008, attorneys for Defenders of Wildlife and the Sierra Club filed a Petition for a Writ of Certiorari with the U.S. Supreme Court to hear its "constitutional challenge to the Secretary's decision waiving nineteen federal laws, and all state and local legal requirements related to them, in connection with the construction of a barrier along a portion of the border with Mexico". They question whether the preclusion of judicial review amounts to an unconstitutional delegation of legislative power and whether the "grant of waiver authority violates Article I's requirement that a duly-enacted law may be repealed only by legislation approved by both Houses of Congress and presented to the President". On April 17, 2008, numerous amicus briefs "supporting the petition were filed on behalf 14 members of Congress, a diverse coalition of conservation, religious and Native American organizations, and 28 law professors and constitutional scholars".