Can I change my F-1 status to work visa after OPT in case if I open my own business?

You would have to be eligible for an investor visa, which varies quite a bit in options but generally you need at least $100k to invest in your new...

Can I leave the US - to Canada, just before my O-1 Visa Expires, and return 1 week later on a standard tourist Visa - Esta

I agree, this isn't a solid plan. The only way to buy more time is to file Form I-129 for an extension. You don't have to wait for the approval, it...

Can a green card holder apply for fiance visa?

No, only a U.S. citizen can apply for a fiancee visa. Even if you got married and applied for a spouse visa, your spouse would wait almost 2 years...

What do you mean by "never heard back from them"? Did you get a receive confirming filing? Have you kept your address updated? Long waits are very...

You can only work in valid H-4 employment if your spouse is maintaining her H-1B. If her I-140 is revoked, you are no longer eligible. However, if...

Can I attend college classes during change of status period if I'm current student on NATO visa?

I am not sure what the NATO visa grace period is, but I can tell you that you may not attend classes in between statuses. You must apply to change...

H4-EAD for spouse, currently on H1B and her GC process just started

Once you file an Form I-539 to change her status from H-1B to H-4, the extension is jeopardized because she is no longer in H-1B status. You cannot...

You should take this very specific question to your MAVNI program coordinator or the recruiter that signed you up for MAVNI. They have more details...

I filed I485 but received yellow letter to company with evidence . They have given me 87 days to submit evidence

If you have received an RFE and are afraid of denial, you should absolutely have an attorney prepare the response to the RFE. If you do not submit...

Do I need to maintain F-1 status while my Adjustment of Status application is pending?

No, you do not "need" to maintain status because as a spouse of a U.S. citizen you do not have to be in legal status to get a green card. However,...