Arizona just passed a law making it a crime to misrepresent a pet as service animal. Don't know how this applies to an emotional support animal or if the state has any jurisdiction at the airports.
"Without comment, Gov. Doug Ducey on Tuesday signed legislation that makes it illegal to “fraudulently misrepresent” any animal as a service animal to someone who operates a public place or business. Judges can impose fines of up to $250 for each violation.
The legislation is the culmination of efforts by Sen. John Kavanagh, R-Fountain Hills, to keep family pets out of where they don’t belong. And he doesn’t care whether they’re well behaved or not.
“I don’t want some dog being wheeled around a supermarket in the same cart I’ll put my food in later,” he told colleagues during a hearing earlier this month."