I am so sorry that I am tying in Korean.

My keyboard is not working.

I am a green card holder.

According to the instruction by immigration law, the permit is required for more than 1 year of staying out side of US.

Is one year right? I checked other postings in workingus.com, many people say that if more than 6 month, you need a reentry permit.

please give me advice.

Thank you.