U.S. Senator Charles Schumer says airlines lack policies assuring children can sit with their parents, despite 2016 legislation requiring the federal Department of Transportation to enact a universal family friendly seating policy.

Schumer said Sunday that recent complaints by parents to the federal agency reveal that children are sometimes seated rows away from their families, even when parents paid extra fees to ensure their kids sit with them.

Schumer said an investigation by Consumer Reports revealed 136 complaints against airlines for separating parents from children as young as 2 years old.

“The friendly skies deserve a family-friendly cabin, and it is clear-as-day that for many parents aboard flights, the real turbulence is the family seating policy which has become a game of musical chairs that is neither fun nor fair," he said. "It’s either costing parents more or delivering a giant headache that includes pleading with strangers to swap seats."

He sent a letter to Secretary of Transportation Elaine Chao urging her to establish a policy to keep families together when traveling on commercial aircraft.