At the moment the polls close in Texas Tuesday evening, most media outlets and very likely even the Mitt Romney campaign will declare that he has secured enough delegates to win the Republican nomination for president.

For what it's worth, there are two problems with that statement. First, as a practical matter, Romney actually won the Republican nomination when the other candidates competing for delegates in the primaries and caucuses stopped doing so. That was weeks ago.

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It's Tuesday and time to read from your comments. Cathy May(ph) in Bigelow, Arkansas heard our conversation about possible compensation for organ donors and wrote: I'm donating a kidney to a friend this coming August. While I don't care to be paid for donating, I would love to be reimbursed from my loss of salary while recovering from the process. It's a great honor to help another person, but it comes at a cost for me.

One of the day's most-discussed stories has to be The New York Times' report headlined "Secret 'Kill List' Proves A Test Of Obama's Principles And Will."

It's a long, detailed look at how the president has "placed himself at the helm of a top secret 'nominations' process to designate terrorists for kill or capture, of which the capture part has become largely theoretical."

Saying that each one of the recipients has touched countless lives, President Obama presented 13 Presidential Medals of Freedom during a ceremony in the East Room of the White House today.

All of the people on the stage, Obama said, "are my heroes individually." He said that if it were not for John Doar, the Justice Department official who personally escorted University of Mississippi's first black student to campus, he would not be president.

At sunset tonight Manhattan's grid will match up perfectly with the sun, producing a dazzling, golden display on each one of the city's streets.

It happens twice a year and it's been termed "Manhattanhenge," coined by Neil DeGrasse Tyson, the director of the Hayden Planetarium at the Museum of Natural History.

NPR's Margo Adler sent this report for our Newscast unit:

In The Last Full Measure: How Soldiers Die In Battle, Michael Stephenson describes how soldiers fight and die, how those who have lived deal with the experience of combat, and what it reveals about warfare and human nature.

He acknowledges it's a sensitive subject, but he argues it's an important one. Understanding how soldiers die, Stephenson tells NPR's Neal Conan, "is central to an understanding of what combat is. And I think we have to engage with it."

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