I honestly cannot understand what is so attractive about staying in America. If he went overseas he could play at some of the greatest tennis venues such as Roland Garros and Wimbledon and have half a chance of making it into the main draw whilst also getting to see some famous places. Would be much better than constantly travelling around America. I think Fitzy should tell him his DC spot will be jeopardized unless he starts going to these qualies. May be tough but something or someone needs to do something to make him start playing elsewhere because of he keeps this up it will prove detrimental to his career.
The issue of playing in the greatest tennis venues and seeing countries would not appeal to Carsten very much I would because as a successful junior player (top 10) he played all the Grand Slams and has probably already done the tours of the countries so thats not an issue. He actually travels everywhere with his dad (Syd, former pro) and I would say his dad is telling him to stay in the US and the fact that he has lived in America his whole life would have something to do with it (he is an American citizen after all).
Tennis Australia would definetly be telling him that he should try to qualify for the Grand Slams but I think anyone would listen to their parents over an oganisation espically when your father has done it himself. If you look at Carstens results in the US so far they have been encouraging and I think he really wants to be in the top 120 before he commits to playing in Europe.
Just as an off subject does anyone know anything about Carstens mum or mom? is she Australian or American? I'm going to guess American but I haven't heard anything what so ever about her.