SENTRI application conditional process

I'd like to get more information about SENTRI applications. Specifically, if the application is conditional, are the interviews only done at the centres listed on the website? This seems unlikely to me since it only lists CA/AZ/TX. (I'm in Australia)
Best Answer
To clarify the other confusion I guess it is worth adding that, while the CBP web site is not very clear, I believe SENTRI membership is only open to US citizens and permanent residents and Mexican nationals. The SENTRI Eligibility page does say there are "no citizenship or age requirements", but is in fact referring to US permanent residents only. The SENTRI Benefits page suggests this when it says SENTRI members automatically get Global Entry benefits except for Mexican nationals, who must apply separately. This makes sense only because all the SENTRI members who aren't Mexican nationals are US citizens or residents. I also know GOES offers NEXUS members the option to add SENTRI to their membership if they are US citizens or residents, but doesn't if they are Canadian and not US residents.
Finally, with respect to the comments I'd note that anyone who, when entering the US, regularly gets singled out for secondary inspection or other attention for some reason is pretty certain to have an application for a US trusted traveller program turned down for the same reason. That needs to be resolved before applying or the $100 application fee will be wasted.
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What does it mean to be conditionally approved for SENTRI?
Conditional approval is the term used to describe a Global Entry applicant who has submitted their Global Entry application AND passed initial vetting. Once you are conditionally approved, you may schedule your Global Entry interview.How long does TTP conditional approval take?
After completing your application and paying the $100 fee, you now have to wait for conditional approval. The time it takes for conditional approval varies considerably from one person to the next. Many people receive conditional approval within two weeks of submitting their application.How do I know if I am conditionally approved for Global Entry?
Global Entry applicants who are conditionally approved may complete their interviews upon arrival into the United States at an Enrollment on Arrival (EoA) airport location. After the interview has been confirmed, the status of your application will be changed to "Schedule Interview" status.How long does Global Entry conditional approval Take 2022?
Of the Global Entry applicants that responded, most said their applications were approved in 24-48 hours, some in as little as an hour, while those who waited longer still heard back within three weeks.What is the SENTRI program/Card? - Why do SENTRI cards get Denied?
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