For the second time in less than a year, the Obama administration’s top trade official will visit next week with factory workers in Norridgewock; Maine’s senators and representatives differ on the National Security Agency surveillance programs; Sen. Susan Collins’ effort to prohibit discrimination against lesbian, gay, bisexual and transgendered individuals during jury selection moved forward in the Senate this week; and the U.S. Census Bureau launched a new tool that allows users to look at demographic and economic statistics broken down by congressional district.