running investigation first revealed by correspondent sharyl attkisson. cops in arizona are now required to check the immigration status of many people they stop. john blackstone reports on a major change. and allen pizzey on an intriguing discovery that started a debate about whether jesus was married. >> and then jesus said to his disciples, "my wife." captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: good evening. there is a growing perception among voters that the economy is improving. and our new poll out today shows that it's helping president obama's prospects for reelection. 48 days now before election day, here is how the race looks. it takes 270 electoral votes to win the white house, and our cbs news election teams estimates 237 are solid for the president or leaning toward him. mitt romney has 206.