Thank you very much!
If you can, could you please elaborate on the answer to Question 1? As an F-1 student, currently I have no problem entering the US when I visit my family. Yes, there is always a risk but it is quite low as a student with no prior immigration intent, so I don't really have doubt at that time. However, in case of denied/withdrawn prior green card application, would this risk be higher? Would you say "there will probably no problems (just like now), or would you say "there is a high probability for denial of re-admission"?
I am trying to decide if I should apply for Green Card with a case number of 23XXX, since I will need to visit my family in the next 3-4 years.
Sorry for my English and thank you very much!