Can fiance children return to home country if they don't like US?

[immihelp]

Hello,

I have 2 questions. My fiancée has 2 boys age, 19 and 20. She wants to bring them to America with her under her K1 visa. She is however not sure if the boys will like to live in America.


The questions are, can her boys return to Malaysia if they are not happy living in America?

Is there a minimum numbers of the months the boys must reside in America before they can return to Malaysia if they are not happy her?

[immihelp]

They can always go back at any time, if they don't want to come back.

[immihelp]

Could they go back and then return for our church wedding in 2012 with a tourist visa?

[immihelp]

Possible.