Handing a major policy victory to President Donald Trump, a sharply divided Supreme Court on Tuesday upheld the third version of his executive order barring immigrants from six Muslim-majority countries, declaring that the so-called "travel ban" is "squarely within the scope of presidential authority."

In a 5-4 ruling along ideological lines, the high court's conservative majority found that Trump's decision to keep citizens from six countries in the Middle East and Africa out of the U.S. is permissible under the Constitution. The blockbuster decision – Trump's first Supreme Court victory as president – reverses a series of lower-court orders that rejected the ban as a thinly-veiled, unconstitutional ban on migrants and refugees who practice Islam.

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