Major U.S. airlines have urged the Biden administration to abandon a review into whether carriers should compensate passengers for flight disruptions, arguing that they already have sufficient incentives to provide quality service.

Airlines for America, a trade group representing major carriers such as American Airlines, Delta Air Lines, and United Airlines, made the request in a letter to the U.S. Transportation Department on Tuesday.

The group argues that airlines are already subject to significant penalties for flight disruptions, including fines and customer service complaints. It also says that requiring airlines to pay passengers compensation would increase costs and reduce the availability of flights.

The Biden administration launched the review in December to take comments on whether airlines in the United States should provide cash over carrier-caused disruptions like they are required to do in Europe and Canada.

The administration has not yet made a decision on whether to require airlines to pay compensation for flight disruptions.