Constitutional rights may end at the airport but that does not mean your rights as a customer or American end there...and that's why we have laws like the Americans with Disability Act. Things like this change when we hold airlines (or businesses) accountable for their actions even if that means wasting four hours on the phone to complain, posting your complaint to the Airlines Facebook page, getting media attention and filing suit to protect your rights, get reasonable reimbursement and hopefully changing the airlines attitude. Sadly, it seems when you file suit against a company then they take notice. People have to respectfully but firmly stand up for their rights...even if it feels like it is being done in vain.