The U.S. Supreme Court is set to begin hearing oral arguments Monday in a Republican-led challenge to the national health care law that has convulsed the country and its political class for more than two years — and may well define President Obama's tenure in the White House.

Dick Cheney, 71, was in a Virginia hospital following a heart transplant Saturday. Host Laura Sullivan talks with NPR's Rob Stein about the former vice president's health.

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LAURA SULLIVAN, HOST:

It's WEEKENDS on ALL THINGS CONSIDERED from NPR News. I'm Laura Sullivan, in for Guy Raz.

The Republican nominating contest is back in the South today as primary voters cast their ballots in Louisiana. A little earlier, we caught up with NPR's national political correspondent Don Gonyea who's on the road in Louisiana. Don, where are you now?

In Round 8 of our Three-Minute Fiction contest, listeners were given this challenge: Begin a story with this sentence: "She closed the book, placed it on the table, and finally decided to walk through the door." And, as always, the story must be 600 words or less. The deadline is 11:59 p.m. ET Sunday.

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LAURA SULLIVAN, HOST:

A new online ad from Republican presidential candidate Rick Santorum sketches out a dire threat.

(SOUNDBITE OF POLITICAL AD)

UNIDENTIFIED MAN: Imagine a small American town two years from now if Obama is re-elected. The wait to see a doctor is ever increasing. Gas prices through the roof, and the freedom of religion under attack.

Saturday should be another good day for Rick Santorum, as his strength has been in Southern states. Polls in Louisiana, which is holding its primary, also gave him a double-digit lead over Mitt Romney coming into the weekend.

The Sportsman's Paradise has 46 Republican delegates to send to the party's presidential-nominating convention. But the very helpful Frontloading HQ blog informs us that only 20 of 25 at-large delegates will be doled out based on Saturday's results.