Green card holders can travel abroad for a maximum period of 180 days on each trip. If you need to stay outside longer for employment or religious purposes you should apply for reentry permit using the Form I-131 travel document which is valid for 2 years. Also you can use the Form N-470 meanwhile to preserve residence for naturalization process.
You basically need to go back to the US for a period or two.
For the rest of their life if they so wish.
Never
A Green Card is issued for a 10 years period. You can keep on renewing it as long as you want. So there is no limitation on how long you can continuously in USA with a green card.
WOMEN GREEN CARD HOLDER MARRYS MAN EXPIRED GREEN CARD HOLDER IN THE STATES CAN THEY BOTH LIVE IN THE STATES.
11 months. if need to stay longer you can file for extension to the nearest immigration office.
The process to get green card can be through marriage,employment or through relative and should be petitioned for by the US citizen or green card holder spouse, employer or US citizen relative or green card holder in US respectively. Depending on the availability of the visas under the category you apply the time period to get a green card changes.
No it is not the same. With international Student card you can stay in USA as long as you are a student with condition. Green card lets you stay permanently.
as long as you believe in chex mix.
It depends on how you are applying for green card. The US green card can be applied through family member, employment or marriage. A family member who is already a green card holder can petition for alien relative using the Form I-130 and once the priority date becomes current the alien can get the visa and enter US as green card holder. Next is through employer who has to petition and green card can be got either with or without labor certification. Lastly after an alien marries a US citizen or green card holder and is petitioned with Form I-130, the alien can adjust status to permanent resident after two years of successful marriage using Form I-485.
YES YOU CAN BUT A LONG PROCESS BUT LEGIT
How long a person with green card can stay out side US if he is a United Nation employee?
approx. six months.
As long as it doesn't require a security clearance, but that's highly unlikely.