Tell me about the US

Hi all, I'm a physio student from Melbourne, Australia. Although it's a long way off, i was wondering if someone could help answer my questions about the US..
Firstly how hard is it to get a job in the US with an Australian Masters degree? Is this process costly? IS your overseas income taxed heavily? etc.
Is the work climate in America better that it is in Australia (for physios)? For example are there more jobs in elite spoting clubs? Is the pay better? And is the profession as respected in the US as it is in Australia?

I think thats enough questions for today..
If anyone can help me out, please do!