Why does the Department of Homeland Security (DHS rely heavily on the Unites States Department of Agriculture (USDA) in public health planning?

Why does the Department of Homeland Security (DHS rely heavily on the Unites States Department of Agriculture (USDA) in public health planning? Explain how the food-chain can be compromised?

At least 3 sources. At least 275 words or more. APA 7 .

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