US work permits

Hi, I’m thinking of relocating from Australia for a little while (perhaps a year or so), and just wanted to hear from people who have gone through all the trouble.

Just wondering how difficult it is to work there…Does an employer need to sponsor you, or is it just a matter of getting a visa?

Also, do you think having an EU passport is an advantage over an Australian passport?

I’ll have dual Australian/Maltese citizenship soon, not sure if it would make any difference.

Does age make a difference? I turn 30 next month.

Just wondering…

thanks