USPS stands for The U.S. Postal Service which is the only delivery service that reaches every address in the nation.

New Blockchain Patent Presented by US Postal Service as Trump Denies Funding for Mail-In Votes
In light of the 2020 US presidential elections, Trump admitted to denying funding to the United States Postal Service (USPS), despite the mailing service’s proposal on Thursday of a new patent for a blockchain-powered voting system, which would make ballot casting more secure.

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