David R. Obey and Thomas E. Petri Special to USA TODAY NETWORK-Wisconsin Editor's note:Democrat David Obey and Republican Thomas Petri had a combined 78 years of experience representing Wisconsin in the House of Representatives before retiring. Each of us was honored to represent Wisconsin in the United States House of Representatives. The privilege of serving in Congress allowed us a unique perch from which to observe historic moments — both good and bad — for portions of five different decades.