Fantasy sports aren’t gambling. The federal government says so.

The NCAA disagrees. In its eyes, paid fantasy leagues are indeed gambling. At least that’s what Oliver Luck, the organization’s No. 2 executive, said in a speech to a group of people that included Mississippi State Athletic Director Scott Stricklin.

Luck was merely reminding everyone about a rule that’s a clear as day on the NCAA’s Web site

“The NCAA opposes all forms of legal and illegal sports wagering, which has the potential to undermine the integrity of sports contests and jeopardizes the welfare of student-athletes and the intercollegiate athletics community.”

… and in an anti-gambling brochure entitled “Don’t bet on it.”

This rule is, of course, almost completely unenforceable, especially considering the explosion of daily fantasy this year:

And the NCAA knows this. A 2013 survey of student-athletes conducted by the NCAA found that 20 percent of college athletes participate in fantasy leagues with entry leagues and cash prizes, risking their eligibility in the process. But investigations are rare: A 2014 story from Inside Higher Ed cited one case of a golf coach at the University of Missouri-St. Louis who played in several fantasy leagues with entry fees as high as $1,300. He also got three of his players to act as commissioners of his various leagues. The team was placed on two years probation.

“Secondary NCAA violations have involved athletic department spokespeople, assistant coaches, and facility managers paying between $30 and $100 to join fantasy leagues,” Inside Higher Ed’s Jake New wrote.

But notice who’s absent from that list: student-athletes, and it’s probably not because they are heeding the NCAA’s warnings. But the organization doesn’t seem too concerned, other than reminders from executives and a slick brochure. What else, really, can it do?