Two years ago, the NCAA implemented a one-time transfer rule, allowing athletes in sports such as football to switch schools at least once without sitting out.

But the NCAA’s reform didn’t go far enough for seven state attorneys general.

On Thursday, seven AGs sued the NCAA over its remaining transfer eligibility restriction: that athletes who transfer a second time during their college careers are forced to sit out one academic year.

The lawsuit, filed in the U.S. District Court for the Northern District of West Virginia, described the transfer eligibility rule as “an unreasonable restraint of trade.”