Tampering in the NBA is hard to define, impossible to stop, and here to stay

During 2019’s wild free agency period, stars like Kevin Durant, Kyrie Irving, Jimmy Butler and Kemba Walker flew off the board just minutes after teams were legally allowed to start contacting them. Questions about tampering quickly followed.

But what is tampering? Why is it so difficult for the NBA to enforce? Why does it seem like the Lakers are always getting in trouble?