The announcement posted on the White House website reads,

Today, President Biden is announcing that his Administration is sourcing trucking, facilitated by the U.S. Department of Health and Human Services (HHS), for Operation Fly Formula to transport Gerber infant formula from Mexico to Fort Worth, Texas starting on June 24. This delivery will include approximately 1 million pounds of Gerber Good Start Gentle infant formula, the equivalent of approximately 16 million 8-ounce bottles. The product will be available through retail channels.

Besides the HHS, other federal bodies participating in the "Operation Fly Formula" include the U.S. Department of Agriculture (USDA), the General Services Administration (GSA), and the Department of Defense (DOD). All of them have teamed up "to pick up overseas infant formula that meets U.S. health and safety standards, so it can get to store shelves faster," per the White House.