It seems pretty clear that Indiana Senator Richard Lugar has resigned himself to a primary challenge from his right flank and is attempting to shore up his support among moderate Republicans and dems. This would explain his high profile effort to renew the ban on assault weapons. Politico: "Sen. Richard Lugar (R-Ind.) this weekend called on Congress to reinstate the assault weapons ban that expired in 2004. "Lugar is the first GOP senator to call for increased gun control following the Tucson tragedy that killed six people and wounded 13 others, including Arizona Rep. Gabrielle Giffords. But Lugar, who supported...