dog might have to pass a blood test or be forced to quarantine for 28 days in a CDC-registered facility, the costs of which fall back on owners
That’s pretty bullshit. If they force it and the person can’t afford it, are they just going to steal the dog? If they want this to be effective at actually reducing disease, it should be provided at no cost. Even if it were free, the possibility of having your pet forced into quarantine while traveling is already a deterrent to flying with pets. Forcing the cost benefits literally no one.