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slash setup happening out breaking news the battle over birthright citizenship heads

of the Supreme Court and moments the nine justices will hear arguments on President Trump's plans to change how the U.S.

has viewed the 14th Amendment for more than a century.

Welcome to our viewers here in the United States and around the world.

I'm Wolf Blitzer with Pamela Brown, and you're in the situation room. Just minutes from now at the U.S. Supreme Court, just minutes from now at the U.S.

Supreme Court, justices will hear arguments about presidential authority and the power of the lower courts to

restrain that authority. Can a federal judge halt President Trump's plan to end what's

called birthright citizenship for babies born on U.S. soil?

Here's a reminder of what the U.S. Constitution says enshrined in the 14th Amendment to the Constitution and says,

and I'm quoting now, all persons born or naturalized in the United States and subject to the

jurisdiction thereof are citizens of the United States and of the state wherein they reside,

close quote. Let's go live right now to CNN Chief Legal affairs correspondent Paula Ritchie just outside the Supreme Court Paula the

issue of birthright citizenship is almost a backdrop to this case the real

issue right now is the power of district judges to block the executive order

of a president nationwide can you explain why that's so significant

and the practical effect at play right now?

Well, this is high stakes for the Trump administration

...