Is the Phrase "Under God" in the Pledge of Allegiance

Is the phrase "under God" in the Pledge of Allegiance violative of the Establishment Clause of the First Amendment? {Mention decision by Ninth Circuit Court of Appeals in Newdow v. U.S. Congress, June 26, 2002. Writing for a divided panel in Newdow, Judge Alfred Goodwin observed that leading schoolchildren in a pledge that refers to United States is "one nation under God" is as objectionable as making them say "we are a nation 'under Jesus,' a nation 'under Vishnu,' a nation 'under Zeus,' or a nation 'under no god,' because none of these professions can be neutral with respect to religion."}