Hello,I am US citizen and I am going to petition & sponsor my parents for green card.we are family of three with 1 3 year old boy.our financial situation is not that great.we both part time because we both are in school as well completing our graduate degree.how much do we need to make as couple to sponsor my parents for green card?I have also petitioned my brother for green card in F4 category few weeks ago.Do we only need to submit form I-864 to department of state?do we need to submit form I-864,pay stubs,tax returns separately to both department of state and US embassy/consulate?how many months of pay stub do we need to send?if I stop working in next few months while petition is pending will it make it difficult for both petition to get approved even though my spouse will be working?I apologize if these questions were asked or answered by any member in the group