Border Patrol Required to Provide Formula to Detained Infants

Q: Has the Biden administration sent “pallets” of infant formula to the border amid a nationwide shortage?
A: Yes. Customs and Border Protection, the agency that first encounters and then processes immigrants, is required by federal law to provide formula to infants in its care and has been doing so during the recent shortage.  

FULL QUESTION
Is it true that the Biden admin is sending pallets & pallets of baby formula to the immigrants at the border but leaving US grocery store shelves bare?