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I'm Amy Morris.

The Supreme Court is casting doubt on President Trump's restrictions on birthright citizenship in a consequential case magnified by Trump's presence in the courtroom.

The first such appearance by a president.

Conservative and liberal justices questioned whether Trump's order declaring that children born to parents who are in the U.S.

illegally or temporarily are not American citizens flies in the face of the Constitution.

Justice Sonia Sotomayor suggested that supporters of the president's action mimic the views of opponents of citizenship back in the 19th century.

Justice Department lawyer Solicitor General John Sauer argued that the Supreme Court should end birthright citizenship.

A definitive ruling is expected by early summer.

SpaceX has filed confidentially for an initial public offering, bringing the company closer to delivering the biggest ever listing.

Anthony Hughes is following the story for Bloomberg News.

Bloomberg's Anthony Hughes on Bloomberg Intelligence.

The draft IPO registration submitted to the SEC shows that SpaceX could seek a valuation in the IPO of more than $1.75 trillion.

President Trump says the U.S.