BOSTON -- Less than 24 hours after launching his re-election bid, U.S. Sen. Scott Brown came to Lowell Friday and discussed his Democratic opponent's foreign-policy credentials, the presidential race, and even his personal finances. During an hourlong editorial board meeting at The Sun of Lowell, Brown also expressed frustration with Washington gridlock. He criticized partisan bickering for stalling action on issues such as reducing the national debt and fixing the economy. "There are times when I'm going to be with my party," said Brown. "I'm a Republican, obviously. But there are times when our party down there, especially, is acting...