If it's Thursday, the Supreme Court hears arguments in a crucial case that could decide the fate the president's push to end birthright citizenship,

while also reshaping the ability of judges to fight unlawful actions by the president.

Plus, President Trump says the U.S. and Iran are closer reaching a nuclear deal after a top Iranian official tells NBC News in an exclusive interview that Tehran is willing to make key concessions.

And all over the map, high-level peace talks between Ukraine and Russia stalled in Turkey today, as President Trump tells reporters that, quote,

nothing will happen until he and Russian President Putin meet face to face.

Welcome to meet the press now.

I'm Yamishal Sender in Washington, where today the Supreme Court heard arguments in a case that could impact who is considered a citizen in this country and could totally reshape how judges respond when the president oversteps or abuses his legal authority.

Today, the high Court heard arguments challenging President

Trump's executive order to end birthright citizenship. A right, many legal experts agree,

is enshrined in the Constitution's 14th Amendment. Justice Sonia Sotomayor, who was appointed

by former President Barack Obama, said the order violated at least four Supreme Court precedents.

The president is violating an established, not just one,

but by my count, four established Supreme Court precedents.

We have the one arc case where we said fealty to a foreign sovereign

doesn't defeat your entitlement, your parents fealty to a foreign sovereign,

doesn't defeat your entitlement to citizenship as a child.

We have another case where we said that even if your parents are here illegally,

if you're born here, you're a citizen.

We have yet another case that says, even if your parents came here and were stopped at the border, but you were born in our territory, you're still a citizen.

And we have another case that says, even if your parents secured citizenship illegally,

you're still a citizen. So as far as I see it, this order violates four Supreme Court precedents.

The U.S. Solicitor General arguing on behalf of the Trump administration pushed back.

...