CBP is eliminating district permits effective 12/19/2022. Those brokers holding only district permits will be transitioned to national permits. Those already holding national permits will not be affected.
Here is some of the info posted on the CBP website in October followed by a link to the complete announcement:
Within the new national framework, district permits will be eliminated. All customs brokers currently operating with only a district permit will be automatically transitioned to a national permit before the Final Rule effective date. CBP has diligently designed a national permit transition process that will ensure no lapse in permit activity for customs brokers impacted by this process. Licensed customs brokers who already hold a national permit will not be affected.