SAN DIEGO – Rep. Duncan Hunter, R-Alpine, will continue his campaign swing through South Carolina Friday, a day after formally declaring his candidacy for the Republican presidential nomination. Hunter plans to discuss his support for U.S. involvement in the Iraq War, “fair and equitable trade,” and his opposition to illegal immigration, an aide said, adding the congressman also will field questions from voters at the Charleston School of Law. Hunter formally declared his candidacy in Spartanburg, S.C. Thursday, saying, “With the support of our families, with faith in God and with confidence in goodness of the American people, let's begin...