michael melton, human papillomavirus, nathan mccall, and bishop harry jackson.nk you all four very much. >> thank you, sir. >> thank you. >> thank you. >> woodruff: again, the major developments of the day: attorney general eric holder said he wants texas to get federal court approval before changing its election rules. united states prosecutors indicted four russian nationals and a ukrainian for hacking corporate computers to steal millions in cash and goods and spanish police questioned the sdoia a second juror in the george zimmerman trial spoke publicly, saying she felt zimmerman, "got away with murder" but there qawnt enough evidence to convict him. >> brown: online, the case for allowing more guest workers into the u.s. kwame holman explains. >> holman: yesterday we featured the argument against more high- tech visas. today: why such workers stimulate innovation and the economy. that's on making sense and on twitter, we hosted a lively discussion on curbing gun violence. all the comments are available on our homepage. find all the stories from our series t