LITTLE ROCK, Arkansas (AP) -- The summer travel season is in full swing, the Clinton Presidential Library is drawing 2,000 visitors a day, and a new tourism phenomenon -- the "Billgrimage" -- is being seen 115 miles away in the town of Hope, Arkansas. "People are coming from the library saying they're making a Billgrimage to Arkansas; it's so cute," giggles Crystal Altenbaumer, director of the Clinton Birthplace museum in Hope. Among those on a recent "Billgrimage" was Ava Carter, a Democrat from Dallas, who convinced her Republican travel partner, James D. Stearns, to give their summer trip a Clinton...