While briefing the media about Michelle's trip, the US side said the First Lady is to steer clear of politics, human rights, trade disputes and other bilateral differences - issues better handled via official diplomacy, it said. "That approach is right. The uniqueness of the role of First Ladies is its soft touch and freedom from the knottiness and even ugliness of hard politics," the report said."Although it would be naive to expect Michelle's visit to iron out all differences between China and the United States,it is safe to say that a successful visit by Michelle will infuse fresh vigour into the development of bilateral relations," it said.