SIMI VALLEY, Calif. — The scrap between Rick Perry and Mitt Romney may have gotten more attention in Wednesday’s presidential candidates debate, but it was tame compared to the dust-up between Mr. Perry and Rep. Ron Paul, two Texans who apparently have spent plenty of time digging up dirt on each other and aren’t afraid to use it. At one point when the video cameras weren’t rolling — though the incident was caught by still photographers — Mr. Perry walked over Mr. Paul’s lectern, took hold of the congressman’s wrist and wagged his finger at him. The physical exchange was...
