Shame on CNN's Lou Dobbs and some GOP members of Congress for fanning the conspiracy theory that President Obama was born in Kenya and therefore isn't eligible to be president. This canard has been thoroughly debunked, and they know it. Talk-show host Rush Limbaugh has done his part by joking that Obama and God have something in common — the lack of a birth certificate. Kansas attorney general candidate Kris Kobach repeated that joke at a GOP gathering this month. But as smart Republicans are realizing, nutty conspiracies don't help the GOP; they only make it look nutty.