@AmericanAir I have found and spoke to her Manager and he was helpful. Also another supervisor helped to set it up and he was also terrific. His name was Gonzalo. Please recognize this supervisor as being excellent at his job!
@AmericanAir At YYZ check in desk. Manager “Giselle” and another agent were extremely rude and unprofessional. They were unaware of how the Nexus program worked and were prepared to deny me boarding. Only after I insisted that they contact US immigration they were told all was ok