Not real world politics, FAERUN CANON
shortly before the start of the game, a neighbouring city was dragged to hell
on being rescued by adventurers it expelled anyone it connected with devilry and demons, all teeflings, worshippers of unpopular gods, anyone the rulers didn't like, the lot. All thrown out onto the road and up on BG's doorstep. That is the premise of act 1 and is pretty much explained in game. The reason refugees are an issue in the game is because that is a major plot thread of the game and a current major event of the faerun setting!
It's not about america, the game isn't even made by americans. not everything is secretly about americans.
Also evil doesn't mean jerk with one note personality = evil
The orange bit certainly was. Donald Trump has repeatedly been called Orange Man because he uses too much bronzer.
