He was in The Perfect Murder. He was born in NY, to an american mother, and a father from Denmark, spent much of his childhood abroad in Denmark, Argentina, and Venezuela due to Dad's job.
He is a great actor. Period. Why do we even care what actors think? As I said earlier, I don't give a rip what my plumber thinks about politics. Viggo Mortensen does a great job in Lord of the Rings. He does not have a degree in poli sci, a career in governance, or experience in geo political diplomacy.. Ignore his politics, enjoy his acting.
His parents moved to Argentina when he was 2 and he grew up their and came back here when he was a teenager.
He used to be married to that whacked-out punker Exene Cervenka.