It's the same software man.  It's just a new initially seeded block chain.  YES, you have to trust to government to follow its own laws and give out the coins according to the schedule that it proposes when it creates the chain.  But you already have to trust them for just about everything already, don't you?  And even then, you don't actually have to USE your U.S. virtual coin if you don't want to.  Anyone who doesn't want to participate doesn't have to use the coins at all.  But you won't have any other way to conduct virtual coin transactions with the government since it would be the only virtual currency they would accept.  But that's OK, once all of the non-paranoid people have actually started using the currency for years, you'll eventually accept it too.