President Trump ordered the Pentagon to send around 2,000 National Guard troops to Los Angeles in response to protests against immigration raids in the city. Elizabeth Goitein, senior director of the Liberty and National Security Program at the Brennan Center for Justice, explains the legal implications. Trump ignored California Gov. Gavin Newsom's objections to deploying the National Guard. The last time a president called in the National Guard without the governor's approval was in 1965 during the Selma march. Historian Julian Zelizer explains more. Then, John Ruskey calls the Mississippi River "a creative force" that sculpts the landscape and rejuvenates the people who experience it up close. But climate change is making that force stronger and more destructive. Here & Now's Chris Bentley took a canoe ride with Ruskey and reports on the future of the river.

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