Attorney General Eric Holder spoke in Chicago on Monday on the legal rationales for targeting and killing Americans suspected of terrorism overseas. Carrie Johnson talks to Melissa Block.

Days after apologizing for his comments about a Georgetown University law student, Rush Limbaugh was back on the air Monday afternoon. He lost several advertising sponsors and upset Republican officials with his very personal attack on the student who had spoken out for insurance coverage of contraception.

Most states have improved their general-election voting procedures since the Bush-Gore Florida recount in 2000. But judging from the stumbles this campaign season, the political parties that run caucuses didn't get the memo. Three states hold Republican caucuses on Super Tuesday.

Can sushi be sustainable? Yes, says one Oregon restaurant. It's selling that message in a popular new video. But most sushi purveyors aren't on the sustainability bandwagon.

Significantly more Ohio Republicans believe Santorum shares their views than Romney does and yet the race is a tie? What's going on? It appears it's all about electability. Romney crushes Santorum on that dimension.

Public health officials will have a hard time convincing raw milk advocates that the product is dangerous, according to a new study.

Demonstrators in Alabama are protesting the state's voter ID and tough immigration laws. They're calling it the "second" Selma to Montgomery March, marking the 47th anniversary of the historic civil rights march. Host Michel Martin speaks with two people covering the march: Orlando Rosa of La Jefa Radio and Birmingham News reporter Charles Dean.

Newspapers have chased audiences and advertisers to the Web and other digital platforms, where they are finding strong growth. But that transition has been rocky. A new study from the Pew Research Center's Project for Excellence in Journalism suggests there are ways to make the leap.

Sen. Olympia Snowe's retirement announcement may make Democrats happy — they now can contest the seat. And conservative Republicans may be happy too — she too often voted with Obama. But those who believe in bipartisanship and across-the-aisle dialogue may have reason to mourn her decision.