Proper noun
Initialism of United States Sports Academy.
Initialism of United States Ski and Snowboard Association.
Initialism of United States Student Association.
(derogatory) Initialism of United Socialist States of America.
Source: en.wiktionary.orgI doubt President Trump’s team is worried about facing either one in a debate, since Biden won’t know what office he’s supposed to be running for while Bernie wants to be the Czar of the USSA. Source: Internet
Really no different from the USSA: Keep that ship offshore, the Premier doesn't want our infected number to go from 0 to 15 during the current reporting period. Source: Internet