Originally Posted by fin 645

This afternoon I received an email from DHS/Nexus stating that "Canadian citizens who are traveling domestically in the United States who are members of NEXUS are now qualified to participate in TSE PreCheck".

It also says that "Members interested in participating in TSE PreCheck through their NEXUS membership must enter their PASS ID into the ‘Known Traveler’ field when booking a flight reservation or saving their PASS ID to their airline’s frequent flyer profile."

But I guess the OP has identified a wrinkle in this process.