In an email to colleagues on Saturday, reviewed by Reuters, she said the independent Council of the Inspectors General on Integrity and Efficiency “has taken the position that these termination notices do not comply with the requirements set out in law and therefore are not effective at this time.

Phyllis Fong, a 22-year veteran, said the Trump administration had not followed proper protocols, according to Reuters sources.

The USDA Inspector General deals with food safety, audits and investigations of the Agriculture Department and violations of animal welfare laws. The USDA has been one of the main agencies dealing with the outbreak of bird flu, which has spread to cattle and poultry. One person in Louisiana has died from the disease.