Pulisic has to go back to his grandfather to find Croatian roots. The fact that he is only now getting his Croatian passport (to facilitate his career) tells you that his ties to Croatia are really not all that strong. I'm not 100% sure, but I don't believe he speaks the language. From people I've talked to, he's not playing for Croatia unless he believes he has zero chance with the USA. It's really a non-issue. It's just interesting that Croatia rates him.