The talk was cordial and diplomatic. The events were refined and elegant. But this week's visit to the White House by the president of China may have been historic. Did it mark the end of the American Century? Was the joint press conference between President Obama and President Hu the symbolic moment when China took its place as an equal to the United States, soon to be the dominant nation? One could have gotten that impression. Hu kindly offered to invest and help us create jobs, politely avoiding mention of all the U.S. debt that China holds. On economic matters, Obama appeared deferential. How did you see it? Was Hu's self-confidence emblematic of looming economic realities? Please share your thoughts on the United States and China in the comments section below.