A growing crackdown on delivery apps is taking shape across the US. Federal regulators are weighing new rules. Lawmakers are probing pricing deals between major companies. And in New York City earlier this month, Mayor Zohran Mamdani announced a nearly $1 million settlement with a delivery app over its fee structure, and vowed to continue the momentum. Taken together, the moves point to something bigger than frustration over " junk fees ." They signal a widening effort to scrutinize how prices