China Ambassador Huntsman Resigns, May Challenge Obama in 2012

And the White House is not too happy about all that:

Jon M. Huntsman Jr., the U.S. ambassador to China, sent a resignation letter to President Barack Obama on Monday, the White House said. Huntsman now is likely to explore a Republican presidential bid, according to supporters.

In a letter hand-delivered to the White House, the former Utah governor said that he wants to return to the United States by May. The letter thanks Obama for the opportunity to serve the country and praises the U.S. embassy staff in Beijing.

If Huntsman won the GOP nomination, he would be challenging the reelection of his former boss. White House officials are furious at what they consider an audacious betrayal, but know that any public criticism would be likely to benefit Huntsman if he enters the primaries.

Huntsman is the former Republican Governor of Utah. Some people think Obama chose him for the China job specifically to get him out of the way for 2012, but that may not be working.

Huntsman is apparently a global warming believer and in many ways a pale impersonation of Obama.  I don't think he has much chance in the primaries.