I am looking obnion

Hi,

I am carrying know I ant to bring my prents to usa from india everything is fine...due date is jun and my question is.Is it good to bring both(mom and dad)at a time or first mom will come later after 4 months if I bring dad for 2 months so that while returning they both can travel at a time ani naa obnion.I want suggestions...dad is govt employer he can stay only for 2 months...so is it good to come both at a time during first 6 months or other option..

I am looking obnion