The Supreme Court is hearing its final oral arguments of the season Wednesday, and it's one of their highest-profile cases of the year: President Trump's ban on travelers from six majority-Muslim countries. Trump's third iteration of his travel ban has been in full effect since December, but the challengers, represented by former acting U.S. Solicitor General Neal Katyal, argue that the ban on visitors from Iran, Libya, Somalia, Syria, and Yemen, as well as North Korea and a limited number of Venezuelans, is an unconstitutional manifestation of Trump's promised Muslim travel ban. The Trump administration asserts that the ban is a lawful exercise of executive authority. The justices are expected to hand down their decision in the case, Trump v. Hawaii, by late June.

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