SAN DIEGO -- Future costs for illegal immigrants in the United States will reach a half a trillion dollars, a Heritage Foundation researcher said Wednesday at congressional hearing in San Diego. The influx of illegal immigrants has effectively "imported about 10 million high school dropouts into the United States," said Robert Rector, a senior research fellow in welfare and family issues for the Washington, D.C.-based think tank. Rector testified before the House Judiciary Committee, which convened at the Marine Corps Recruit Depot for one in a series of hearings on illegal immigration this month. The hearings are a rebuttal to...