Is USA willing to play second fiddle to China in AIIB?

http://en.people.cn/n3/2017/0116/c90000-9167343.html

The later you join the AIIB, the lesser clout you will have in AIIB.  Therefore, USA will only play second fiddle to China in AIIB as it is a late comer.  AIIB is spearheaded by China and China will be the chair in AIIB.  Can USA take the insult to be in a supporting role instead of the leading role?