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WASHINGTON, DC - DECEMBER 04: New Jersey Governor Chris Christie (L) waits next to his vehicle in front of the U.S. Supreme Court December 4, 2017 in Washington, DC. The Supreme Court was scheduled to hear Christie vs. NCAA on whether states canÊlegalize sports betting. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - DECEMBER 04: New Jersey Governor Chris Christie (L) waits next to his vehicle in front of the U.S. Supreme Court December 4, 2017 in Washington, DC. The Supreme Court was scheduled to hear Christie vs. NCAA on whether states canÊlegalize sports betting. (Photo by Alex Wong/Getty Images)

March Madness

The NCAA men's basketball tournament is taking place in the U.S. between the country's top college basketball teams.