I'm happy to speak to this.
I think the original wording mentioned just “the United States”. I thought it would be a little clearer if we included “the United States of America” in full. In other legislation, such as CETA—the Canada-European Union Comprehensive Economic and Trade Agreement—that legislation could refer to the European Union as just “the EU”, but it would refer to the full pronunciation of “the European Union”, so I thought it would be a little clearer to pronounce “United States of America”.
Again, it's a very minor amendment. I don't think it's a big deal, but I go back to my lawyer days, when I was always double-checking every “i” in contracts. I'd just like to add the words “of America”.