screw worm situation?

Check with Dr. Jorge, but check with Sharon. She is in touch with both the airlines and FDA.

It appears that all airlines flying from Mexico to the USA are complying with the APHIS mandate.

We fly Aeroméxico from ZIH to MEX, then Delta back to the US in April. We have to have the certificate for our dog in order to return. I have been in contact with Dr Islas on WhatsApp. He is aware of the need for an area vet to be authorized to issue it.

Flights leaving ZIH to the states on Alaska Airlines definitely require the screwworm certification. I know this because a friend actually drove out to the airport and asked the Alaska rep if he could board an upcoming flight with his pup to LAX without it. Answer: Nope

Not to nitpick but the screwworm certificate for canines is being mandated by the US Department of Agriculture, specifically the Animal and Plant Health Inspection Service (APHIS). It's completely separate from the CDC rabies/ microchip requirement and has nothing to do with the FDA.