WeiGucrop.jpg— Wei Gu is a Reuters columnist. The opinions expressed are her own —

China has finally given a green light for Disneyland to build a theme park in Shanghai. Negotiations that started when Bill Clinton was in the White House have concluded just before President Barack Obama is due to visit. The approval looks like a coup for Walt Disney Co, but it will take all of Mickey’s magic to prevent the park from becoming another government-financed loss maker.