Good morning.

Our early headlines:

-- Reports: Police Pursued Manslaughter Charge In Trayvon Martin's Death.

-- Gingrich Slashes Staff, Pins Hopes On GOP Delegates Turning To Him.

Anselmo Baldonado invites you to join him On The Latin Side Wednesdays from 10:00 p.m. to midnight. On The Latin Side features a great selection of music reflecting the cultures of Central and South America, the Caribbean and Spain.  You'll enjoy Latin Jazz and popular dance music, as well as traditional and contemporary performances from established and emerging artists.

"I grabbed his arm and put him in a choke hold. ... I'm just happy I was able to get him down to the floor."

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RENEE MONTAGNE, HOST:

On the third and final day of Supreme Court arguments over the constitutionality of the health care overhaul law enacted in 2010, the focus turns to whether the law could survive if the justices decide to strike its most controversial component — the so-called mandate that "requires most Americans to either have health insurance starting in 2014 or pay a penalty," NPR's Julie Rovner reports.

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DAVID GREENE, HOST:

As he slashes his campaign schedule and lays off about one-third of his staff, 2012 Republican presidential Newt Gingrich is mounting a "big-choice convention strategy" that he hopes will end with Republicans turning to him to be their nominee, NPR's Don Gonyea tells our Newscast Desk.

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RENEE MONTAGNE, HOST:

And the controversial Keystone XL pipeline, whose construction has been delayed over environmental concerns, could now face some competition.

As NPR's John Ydstie reports, two companies have announced plans to build pipelines that would carry out the same service as the XL, channeling oil from Canada's tar sands to refineries in the Gulf of Mexico.