He has the most-watched YouTube video ever (more than 900 million views), and is set to perform at the White House later this month.

Eight years ago, however, the “Gangnam Style” K-pop singer advocated  the murder and torture of US military personnel and their family members.

HAPS, an English-language Korean magazine, says news of PSY’s anti-American views have long been known in Korea, but only recently surfaced in the US.

The lyrics of the anti-US song performed live by PSY and several other popular Korean singers  in 2004 (shortly after the US invaded Iraq) were first translated into English  two months ago on CNN’s iReport: