The new blue Ford and its matching two-ton trailer cruised slowly through Cameron, S.C., past the white frame houses set amid old oaks and magnolias, past the new cotton gin walled with tight-packed bales. From the trailer, a loudspeaker intoned metallically: "Your Congressman, Hugo Sims, will speak to you in an hour from now . . . Congressman Sims brings his office to you to report, to talk over your problems."
Within the hour, a boyish 28-year-old with cropped blondish hair and a ready grin wheeled into the vacant spot near A. O. Rickenbacker's hardware store. He hopped out of the...