The federal government is ordering child seat maker Graco to explain why it didn't include 1.8 million infant seats in a recall for faulty buckles.
The National Highway Traffic Safety Administration says Graco has until March 20 to explain why last month's recall of 3.8 million child seats didn't include infant seats, which have the same buckles that can get stuck on the child seats.
Graco has said the child seat buckles get stuck because children drop food or drinks on them. It is sending replacement buckles to owners for free. It will also send replacement buckles for infant seats if owners request them.
NHTSA says Graco will face fines of $7,000 per day if its response is late or incomplete.
Graco said Friday it will comply with the request for an explanation.