The lawmakers want details of the USDA's response plan.
USDA had eradicated 7.5 million turkeys and 42 million chickens since Dec. 2014.
Only chicken free of antibiotics will be served.
Rep. Louise Slaughter (D-N.Y.) urged FDA to "protect antibiotics for human use."
Of 25 restaurant chains reviewed, five had policies to limit the use of antibiotics.
The rule is intended to prevent the growth of drug-resistant super bugs.
Sens. Warren, Feinstein and Gillibrand sent a letter to the Task Force for Combating Antibiotic-...
Nearly one year after the Government Accountability Office found significant gaps that could allow...