What is the scope of Sports physiotherapy in USA?

Is the scope of Sports physiotherapy in USA better or some where else. I would like to take up courses which can make my future secure. I don't want to jump in to any course without knowing what it holds for me in the future. If any one can advice me on which course to choose as Masters in physiotherapy if i am to study and work in USA?
I heard that jobs in Australia are saturated specially for international students.
Can any one suggest me!! Your advice are warmly welcomed..