Illegal Sanctuary In Seattle Kills Woman

[Marshal Murat]

Well, would Rowan have said?
"Yes officer, I am an illegal immigrant."

He could have lied, and since he was British and 'across the pond' it would be odd for him to be an illegal immigrant, so the officer wouldn't have asked him otherwise. Had they investigate his 'aliases' then they wouldn't have gotten far. He was evidently experienced in this area, and the policeman could do little about it.
I think that had the officer inquired, Rowan would have lied or worked around it.
Now if he was Hispanic, then more suspicion would have been given to him.