Why the transfer portal is hurting March Madness

In 2018, the NCAA began allowing college athletes to transfer without having to "sit out" for a full year. Since then, the players have taken full advantage of the transfer portal, and even sometimes transferring multiple times during their Division 1 college career. The new rule combined with allowing players to earn money in college, something called Name, Image, and Likeness (NIL) has its supporters and its opponents. CNBC breaks down the transfer portal's impact on March Madness.