Is it just me or are the Americans adopting this guy as one of their own?
It definitely seems like that. I think it is a sign of how desperate they are to have a real top player again; Isner and Querrey have promise, but neither even looks to have a career as good as Roddick, let alone the historical greats of US tennis like Sampras and Agassi. They have Harrison, but he's not quite up to this level yet, though he could be soon enough. Milos seems, at least for now, like he has the game to be a top 10 type of player, and I think they see a Canadian probably as 'close enough', and find the story of him being a 'trailblazer', or whatever, compelling.
Sure, Milos has earned attention with his play and demeanor, but I doubt if he were representing Montenegro he'd have quite the US bandwagon he seems to be developing.