My date is about to get current on Aug 1st and I got an RFE to get latest medicals, and employer verification letter.

You really should consult an immigration lawyer -- your case has many specifics and a general answer would not be helpful.

Can I file i-864, Affidavit of Support jointly with my wife ( don't work ), and me on f1 receiving untaxed scholarship funds.

You cannot use scholarship funding. You need income for the I-864 and if you use your income, you must have had an EAD and have worked legally.

Do you absolutely need a Bachelor's degree in order to qualify for the Research Scholar category?

Foreign degrees undergo educational equivalency to evaluate U.S. equivalency. Check whether the program would issue a J. You should consult an...

Unfortunately, when you agree to sponsor the applicant, you are in a way vouching for that person.....even if that person updates their address...

Immigration case

It depends on your case number. Portsmouth is the location for your documents. Use this address -- it is listed on the form.

How long after upgrading a petition will I start getting AOS fee bills,IV package and all?

Unfortunately, no one can really answer this with any level of accuracy! Just be prepared for delays..

You need a regular address. Also, green cards may not be deliverable to a PO Box...

I HAD F2B2 STATUS FOR MY PETITION AND I HAVE MY INTERVIEW IS SCHEDULE ON JULY 2014

You can always reschedule an interview but you need to consult an immigration lawyer for your case specifics.

I was denied entry to the US and chose to withdraw my application. I wish to re-enter the US, what are my chances?

It could go either way. At your Consulate interview, be as candid as you can and explain reasons for wanting the B2. Also, submit with the B2...

Hi. my authorization work will be expired end of August 2014. Now I extended my J2 visa for ten month.

EAD processing is 90 days so apply ahead of time.