doe88 is talking about mail covers (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mail_cover" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Mail_cover</a>), a program where the USPS provides copies of the information on the outside of envelopes to the federal agency requesting it.<p>This program is controversial because no lawful order is required for the USPS to collect this information. It&#x27;s an egregious violation of US citizens&#x27; privacy.