Can Green Card priority date be used from the "past".

an earlier priority date can be recaptured by the same or new employer. discuss it with their attorney.

Can i get an f1 visa to remain in the us

as long as you have a valid I-94 you can initiate a change of status to F-1.

US passport through parents citizenship

yes, she can but in the future she may want to have a certificate also.

Green Card Holder in USA wants to live in Canada

I agreed but you can not spend more than 180 days per calendar year in Canada, otherwise you risk losing your US residency and of course you be...

It's been 75 days since I received receipt notice of my OPT STEM Extension application. Is that normal?

call the customer service line again and ask them when you will be scheduled and write a letter to where you filed your application with a copy of...

Can I come back to the USA when my daca has been approved if not what will happen will it effect me getting my green card ?

you can come back if prior to your departure you applied and received your advance parole document. once you come back you are paroled in and...

Should I still apply to obtain a work permit through DACA even if I don't meet all of the requirements?

you should not waste your money by filing as you are not eligible and you know it.

H1B visa holder want to change job?

it is possible and you need to ask the employer to initiate a transfer petition.

not an immigration law question, at least not the US law, and you will possibly need aviation trial lawyer.

if its cashier's check take it to the bank who issued it, and tell them it is not used for the purpose intended, or if was money order then write...