According to the CBP website:
* Update as of January 22, 2018 **
Government is Open and will resume normal operational hours.
As posted on the CBP website, the Government shutdown has closed the CBP Information Center and CBP Global Entry Enrollment Centers. From the website:
Due to a lapse in appropriations the CBP Information Center is closed until further notice.
Also, CBP Global Entry Enrollment Centers are closed. It will be necassary [sic] for you to reschedule your interview after U.S. government operations resume.
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