Carrie Johnson

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Updated at 9:20 p.m. ET

The Justice Department is suing California and two top state officials, accusing them of interfering with federal immigration efforts by passing and enforcing state laws that hinder U.S. operations against undocumented people.

The lawsuit filed late Tuesday in federal court in Sacramento, Calif., points out that the Constitution gives the U.S. government sweeping authority over immigration.

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We're joined now by NPR justice correspondent Carrie Johnson, who was listening in to that conversation.

Carrie, what did you hear in there?

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A new study finds that a lot of money is flowing into races for state Supreme Court. Millions of dollars are coming from sometimes mysterious donors, and a lot of it goes to negative advertising. Here's NPR justice correspondent Carrie Johnson.

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