WASHINGTON — Republican Senate candidate Carly Fiorina said Tuesday that she opposes a ban on assault weapons and supports a U.S. Supreme Court decision this week affirming a constitutional right to bear arms. In a 45-minute question-and-answer session with reporters here, the former Hewlett-Packard CEO also repeated her backing of Arizona's controversial immigration law and said she would support efforts to repeal the federal health care reform measure. But the fundamental issue in the race against three-term Sen. Barbara Boxer, Fiorina contended, will be whom voters trust more on the economy, and she said the contrast between the two could...