Now support for this campaign from the Clinton administration could well doom one of the last free rides in air travel. Two years ago a White House commission recommended that the FAA eliminate the waiver for small children. Later this year the FAA will probably propose requiring car-seat type restraints for kids. The rule, if it takes effect, would end the lap routine. Parents can then count on shelling out not just for an additional ticket, but perhaps another $40 for an aircraft-compatible restraint: the airlines don’t supply them.