Living next to crazy people takes vigilance. Which brings us, as talk of crazy people often does, to Arizona. We worry that spoors of the Crackpot State’s idiocy will drift over here again (recall how our 2010 GOP Senate hopefuls loved Arizona’s ugly immigration law). Now the AZ’s secretary of state says he may leave Barack Obama off the ballot if he can’t confirm the president’s birthplace to his satisfaction. This is, of course, lunacy — except next door, where it’s SOP and the secretary of state is expected to run for governor. Nevada must protect itself, and we suggest a genuinely Arizonan solution: border wall! We’ll donate the first brick.