Is increasing, and America is worried about it. Worry is certainly justified; China is the biggest emerging power and also the most militaristic. In addition, China is an authoritarian country that may not be restrained by popular anti-war sentiments.
Still, on some level the American response is just comical. Here we are, the biggest, baddest country in the world (our military budget of 481 BILLION is almost ten times China's official military budget, though their actual spending may be twice that), waging an unpopular war against nearly unanimous opposition in the rest of the world, and we have the gall to tell them to be more transparent and peaceful.
It's amazing that we sometimes don't get that not everyone is on board with the "America as global policeman" thing.