It is...

歐巴馬

Congratulations!

I would suggest taking a nice long vacation, now. Or a staycation, because he probably doesn't want to see another plane or bus for a while.


By the way, if you bought this T-Shirt, it spells his name wrong in Chinese. (see below.)

UPDATE: I had a suspicion about 奧巴馬 and sure enough, this is how the Hong Kong papers transliterate Obama's name. The mainland Chinese also use the same transliteration 奥巴马.