When he was named president of the Club for Growth (clubforgrowth.org) last year, Pat Toomey didn't need anyone to tell him how important it was having the Republican lobbying group on his side in a tight political race. When the former Lehigh Valley congressman almost unseated Arlen Specter in the Senate primary last spring, the club — which specializes in helping candidates who favor small government, free markets and low taxes — contributed nearly $1 million to his campaign. I asked Toomey about his new job and his future political plans, when I called him at his offices in Washington:...