On May 4, the American Food and Drug Administration released new guidelines regarding their increased power to stop shipments of food believed to be unsafe, and requiring more extensive documentation from food importers:

[The first rule] allows the FDA to administratively detain food the agency believes has been produced under insanitary or unsafe conditions.  Previously, the FDA’s ability to detain food products applied only when the agency had credible evidence that a food product presented was contaminated or mislabeled in a way that presented a threat of serious adverse health consequences or death to humans or animals.

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The second rule requires anyone importing food into the United States to inform the FDA if any country has refused entry to the same product, including food for animals. This new requirement will provide the agency with more information about foods that are being imported, which improves the FDA’s ability to target foods that may pose a significant risk to public health.

Full details are available at the FDA's website.