The Secretary of Health and Human Services (referred to in this section as the “Secretary”), acting through the Commissioner of Food and Drugs, shall coordinate with the Secretary of Homeland Security to carry out activities related to customs and border protection and in response to illegal controlled substances and drug imports, including at sites of import (such as international mail facilities), that will provide improvements to such facilities, technologies, and inspection capacity. Such Secretaries may carry out such activities through a memorandum of understanding between the Food and Drug Administration and the U.S. Customs and Border Protection.