You...DARE...to question the Great and Mighty GUBABA???
Then you shall...DIE!!!
Erm, not really.
The problem is that Japanese has no articles, definite or indefinite, which is why so many Japanese speakers have real trouble with "the" and "a" when they're learning English. So it just says "New United Government President." I would like to imagine that if they meant "A President," they would have said "one of the Presidents," but then, Hikaru ichijo was always just listed as "Valkyrie Pilot," and everybody knew he was A Valkyrie Pilot and not THE Valkyrie Pilot, because, y'know, there are other ones clearly visible in the show.
So yeah, he might be one of many Presidents, or he could be the only one. Japanese doesn't always use plurals, either, so it really could be anyone's guess. Let's hope we get the Great Political Episode of MacF soon so we can put the controversy to rest.