How long do I have to wait after my Appt with biometrics ?

How long after biometrics for a response depends on what type of application was filed.

Is F11 visa holder allow to travel to Mexico or Canada for few days nd be back with no problems?

Attorney Behar well stated the rule. You should be able to travel and return without a problem absent criminal or inadmissibility issues not stated.

Is receiving Form I-797C notice means USCIS accepted the application or is there a chance they can reject it afterwards?

The received date is the date showing a petition or application is timely filed.

Adoption-Immigration. Can we apply for change of status after two years?

An adoption must take place before the child is 16 for immigration purposes.

just file a new application with a copy of the 797 C (adjust of status pending). AP must be valid and current before traveling.

H1b transfer without recent pay stubs

H1B COE with paystubs or evidence of leave of absence.

What if my work permit expires on october 2018 and i need to send the app 5 months prior its expiration, will it be denied?

DACA is winding down. Applications cannot be filed more than 5 months before expiration or they will be rejected or denied.

One may only hold one status at a time. If on H1B status upon H1B employment termination one does not automatically revert to another status. if on...

Can I move to new employer based on my current employer H1/H4 receipt number ?

The H4 status is dependent upon the H1B status. The H1B change of employer receipt is sufficient for an H4 filing. The H4 filing to be timely must...

When I can Apply extension for my spouse?

An H4 admitted with an H1B approval notice will receive an I-94 validity of the H1B spouse. An H4 admitted for a current short H1B validity will...