WASHINGTON -- Treasury Secretary Timothy Geithner heads to Beijing this weekend to urge Chinese leaders to fundamentally alter the export-oriented economy that has created years of trans-Pacific trade tensions.

In meetings with Chinese President Hu Jintao and Premier Wen Jiabao, Mr. Geithner is expected to reiterate U.S. support -- and gratitude -- for the giant stimulus package that China has implemented to combat the global recession.

But...