Note for Australians: These tweaks to the rules almost certainly apply to E3 visas, which would allow you to go to the States with your opposite-sex married partner, and they'd then be allowed to work in any job without further approval from the federal government.

(Through an odd quirk of a US immigration directive, it also allows you to take your non-US same sex partner to the States, but they aren't allowed to work in any capacity. It must be about the only place where US immigration recognizes same-sex relationships.)