On the dusty streets of Tombstone, Ariz., on a weekend the city devotes to legendary western lawman Wyatt Earp, a former policy adviser to Margaret Thatcher told Americans it’s time to put their faith in another man who wears the star, Sheriff Joe Arpaio The U.K.’s Lord Christopher Monckton, known internationally for his climate-change skepticism, is calling on those still skeptical about Barack Obama’s eligibility to be president to put their money where their mouth is and back Arpaio’s ongoing Cold Case Posse investigation into the current occupant of the Oval Office.