Supreme Court Hears EPA Challenge, Nikki Haley Remains Defiant, Frozen Embryo Ruling

The Supreme Court today hears a challenge to the EPA's authority to regulate air quality. Three GOP-led states want the court to freeze a plan that limits air pollution that crosses state borders. Former South Carolina Governor Nikki Haley has vowed to stay in the presidential race through Super Tuesday. But Saturday's primary in her home state is shaping up to be another decisive victory for former President Donald Trump. What's her case for staying in the race? And Alabama's Supreme Court rules that fertilized eggs have the same rights as children.

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Today's episode of Up First was edited by Krishnadev Calamur, Padma Rama, Susanna Capelouto and HJ Mai. It was produced by Claire Murashima, Ben Abrams and Milton Guevara. We get engineering support from Robert Rodriguez, and our technical director is Neisha Heinis.

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