Against, this seems like an Australian decision. Let's not blame everything on America. The Australians have shown plenty of willingness to antagonize china for no good reason. If anything, it's been the Aussies that have been leading the effort to contain china and complain about Chinese growth.
The austrilians are white, anglo-saxon. They hate anyone who are not white and can threaten anglo-saxon white supremacy. That is why they like to antagonize China, because they see Chinese, specially Chinese men as the greatest threat to anglo-saxon white supremacy.