What happens if the U.S. pulls out of NATO?

President Trump is threatening to pull out of NATO, calling the alliance a "paper tiger." Trump and NATO allies in Europe have been at odds since his first term, but the relationship hit a new low following Trump's decision in late February to go to war in Iran without first consulting them. Now, Trump is criticizing allies for not helping the U.S. military. Julianne Smith, former ambassador to NATO under the Biden administration, joins us. Then, the Supreme Court heard arguments on Wednesday on President Trump's executive order that attempts to end birthright citizenship, which makes almost every child born in the U.S. a citizen. In an unprecedented move, Trump sat in on the oral arguments. We speak with Muzaffar Chishti, a senior fellow at the non-partisan Migration Policy Institute, and Kim Wehle, former assistant U.S. attorney in Washington, D.C. And, Trump signed an executive order on Tuesday that seeks to create a national list of citizens who are eligible to vote in each state, and then directs the U.S. Postal Service to only send mail-in ballots to verified voters. But election experts and state officials in Arizona and Oregon say the order is unconstitutional. We hear from Rick Hasen, director of the Safeguarding Democracy Project at the University of California, Los Angeles School of Law.

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