For some reason, you correlate anti-American, pro-China views mainly with China challenging our sovereignty when that is not even an issue. You can be anti-American and pro-China in many other ways.
Being pro-China is not anti-American in itself but being more supportive of the "rise of China" than the interests of the U.S. is. China may not be threatening our sovereignty or existence but they disagree with us on many key issues and play a role in many of our global interests. As quoted from article below, China does" force countries to decide between Washington and Beijing" at times. It's not really possible to deny this.
To put it blatantly, from what I've seen, you seem to care more for the "rise of China" and its interests than you do of the U.S. Furthermore, you being either Chinese or Chinese-American causes further speculation in your loyalty and support. Although, that is but a mere secondary factor because there are many Chinese-Americans are pro-American.
Quoted from here:
http://cjip.oxfordjournals.org/content/2/4/457.full.pdf