Can be asked to switch to an F1 visa when on a H4 visa during my stamping process (if I am 17 and am visiting my home country)?

You should contact an attorney for a complete analysis of your case.

AOS Interview: No Response\Updates until now, possible reasons?

This cursory explanation does not make sense. This is unlike anything I have heard. I suggest you contact and attorney.

Can an unpaid hospital bill affect me getting my green card?

It will affect it because your sponsor is supposed to be able to pay for what you need and that includes your health. Make sure you have proof of...

Can I work in hospital as volunteer?

Typically, work is not permitted whether it is volunteer or paid.

Is Advisory Opinion necessary to get if Im in process to apply a green card through marriage?

If you need an advisory opinion because of a J1 visa, getting married does not typically make it unnecessary. You should contact an attorney for...

Qualify for exemptions for Barr? Adjusting to Permanent Resident Status Under INA 245(a): Bars, Exceptions and Exemptions

For such a complicated question, you must contact an attorney for a complete analysis of your case.

I'm married my husband before he got his citizenship and i enter to usa I would like to know if have have to wait 5years

More information is needed to answer your question. If you are asking how long before you become a citizen after you receive your green card, if...

Do I need to ask my ex-employer to withdraw my H1 petition?

You should definitely contact the company's attorney because he or she knows about your case, and will be better prepared to give you the answer...

How long does it take to receive an interview appoinntnent for U.S. citizenship after the biometrics in Scranton PA?

It should be anywhere from 3 TO 6 months. Good luck.

Transparency is key when filing i-485.