A joint resolution establishing the policy with respect to the number of digits which should be used as ZIP codes or other codes used for mail delivery.

[AI summary unavailable — showing source text] Prohibits the United States Postal Service from increasing the number of digits of the zip code until: (1) the Service and Congress have examined the costs, social consequences, and technical issues associated with zip code expansion and the alternative means of improving productivity in the sorting of mail; and (2) Congress has approved such an increase.…