Yes, Arnold cannot be POTUS and it should remain that way. I've posted this here before, but in case anyone missed it here it is again.
My husband came out of Cuba during Castro's revolution. He has now lived in the U.S.A. longer than he lived in Cuba. His parents urged him to leave Cuba and he never saw them again. After he arrived in America he tried to get them out, but Castro's Iron Curtain had dropped. He's an American citizen and he loves America. He never looked back. He flies the American Flag outside our house. However, friends of ours (she's a born-in America American and her husband is an ex-Cuban) visted Cuba two years ago. Ellen was telling us about a beach they visted in Cuba and she was waxing eloquent about the beauty of this beach. She kept saying she never saw such a beautiful beach. I happened to glance at my husband and I saw such a look of nostalgia and remembrance in his face. Finally, he named the beach and Ellen said that was the beach.
For some reason my husband never wants to see an American President who was not born in America. I asked him why and he said "I wouldn't trust him, but I'll always trust an American".