Actress-turned-activist Bo Derek is spearheading a campaign to stop the export of horsemeat to Europe and Japan. Three European-owned factories in the U.S. send some 26 million pounds of horsemeat overseas each year. Now Derek, who first came to national attention in the 1979 movie "10,” has joined other celebrities and horse lovers in an attempt to shut down the plants — two in Texas and one in Illinois. In September, the House of Representatives passed the American Horse Slaughter Prevention Act, which bans the transportation and sale of horses for human consumption. But it’s unclear whether the Senate will...