What do you mean green card changed for a visa? A visa to do what? Why would you want to change a permanent lawful residence status for a visa?
I had a student visa but went out of status Can i marry a green card holder and apply for a green card?"
Yes, green card holders need a visa to travel to Chile.
Yes, green card holders need a visa to travel to Thailand.
No, a green card holder cannot travel to Dubai without a visa.
Yes, green card holders need a visa to travel to Italy.
Yes, green card holders need a visa to travel to Japan.
Yes, green card holders need a visa to travel to the UK.
Yes, a green card holder does need a visa to travel to Japan.
Do you mean will the U.S. will let you back in without a green card? yes if you have a valid visa, such as a B1 visa or H1B visa. You can also apply for an Advance Parole while you are waiting for your green card to come in.
A "Green Card" is the old term of a US Permanent Resident Visa. However, the Permanent Resident Visa is now no longer printed on green paper, nor is it credit-card sized. It's a historical term for the visa.
Green Card Programs
Does not matter if you are a US Green Card holder or not, when you have an Australian visitor visa, you can go there.