"The former superintendent of a southern West Virginia mine where an explosion killed 29 workers in April 2010 pleaded guilty Thursday to a federal fraud charge," The Associated Press reports. "Gary May of Bloomingrose, the highest-ranking Massey Energy official charged in connection with the blast, faces up to five years in prison when sentenced Aug. 9."

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MELISSA BLOCK, HOST:

In case you're keeping track of high-profile endorsements in the race for the 2012 Republican presidential nomination:

Wednesday, former Massachusetts Gov. Mitt Romney picked up the support of Florida Sen. Mark Rubio. This afternoon in Houston, as NPR's Wade Goodwyn tells our Newscast Desk, former President George H.W. Bush will endorse Romney. Bush's wife Barbara and son Jeb (a former Florida governor) have already said Romney's their candidate.

There were 359,000 first-time claims for jobless benefits last week, down 5,000 from the week before and a pace that continues to be the lowest since April 2008, the Employment and Training Administration just reported.

A police video of George Zimmerman in the hours after he shot and killed Trayvon Martin on Feb. 26 does not show any obvious evidence of the injuries Zimmerman reportedly received during what he says was an altercation that ended with him firing his handgun in self defense.

ABC News obtained the footage and aired it Wednesday evening. As it reports:

We probably won't know until June what the Supreme Court justices will decide regarding the health overhaul law known as Obamacare. The questions this week from the conservative majority seemed skeptical of the "individual mandate" at the center of the law, yet dubious of the law's survival without it.

(A line of questioning may not be a perfect guide to a justice's thinking, but right now it appears to be the way to bet.)

So let's say it's June and the high court has laid low the whole law. That's terrible news for President Obama and the Democrats, right?

New Mexico Gov. Susana Martinez is the ultimate immigrant success story: Two generations after her Mexican grandparents arrived in the U.S., she became the nation's first Latina governor.

And with an overall approval rating of 66 percent of New Mexicans after more than a year in office, she is arguably the most popular Republican governor in the country.

A senior pathologist in the Los Angeles County coroner's office has sharply questioned the forensic evidence used to convict a 51-year-old woman of shaking her 7-week-old grandson to death, identifying a host of flaws in the case.