List your wife's address as your permanent residence. It is an intent based thing not the duration of time spent.

You have to wait for an approval of I-526 to file for adjustment of status.

Will I be subject to section 222(g) and need a visa besides a waiver to enter the US? I'm a Canadian citizen.

You should consult an immigration attorney laying down exact dates and timelines.

Can I file for I-485 which is current for my nationality while I am waiting for the OPT 17th month STEM extension?

Per the limited facts presented you are fine for now.

I want to know does it matter what state i apply for ssn card?

It does not matter. But do take all the necessary documents and be prepared to wait for a long time.

Have uscis started processing opt application? If not is there a way to expedite the process as my opt start date has started.

Unless you receive your EAD card you do not have a valid work authorization. It usually takes 90 days for the EAD to be processed and can take up...

Green Card holder leaving the United States for more than a year.

HI, You definitely need to get a re-entry permit before you leave the country. Permanent residence is an intent based thing. If you are out of...

Im in L1A visa status and would to extend my visa so which form shall i will use?

You have to file form I-129 for extension. The petitioner i.e. is the U.S. company will file for the L1 extension. There is an extensive list of...

What is the timeframe to become a Green Card holder if you marry a US citizen?

You can adjust status from B1 to Green Card in 4 to 6 months. Also apply for advance parole and employment authorization. This helps during the...

I 485 approved on 28th of July

Call USCIS or take an infopass appointment.