After Sen. Scott Brown, R-Mass., voted in favor of a jobs bill endorsed by President Obama and the majority of Senate Democrats, I immediately heard from a number of Republican friends in and around Washington, D.C. who knew I am a conservative from Massachusetts. The questions were rapid fire and the anger was surprising. “How dare he side with Obama?” “Is he just a Kennedy Republican?,” and “Where do I go to get my donation back?” My response to all was, “You have got to be kidding me. This guy has not been in office a month, he’s only taken...