Reentry permit

[immihelp]

Hello

I m a green card resident.
I wanted to know If I need a reentry permit if I go out of US for 3 weeks only...
Because your website mention that we only need to apply for a reentry permit for outside trip of more than 1 year.
But I ve been told I need to ask for a reentry permit even for a 3 weeks trip outside US ?

[immihelp]

No, you don't need.

[immihelp]

You should apply for reentry permit.