Generally there is no expiration for the I-864, unless the green card holder has worked for 10 years or 40 quarters. Otherwise, if the green card...

Overstayed my student visa for 20 days before got married. Status is pending, I 131 approved, should i live the USA for wedding?

No it would not be wist to leave the US while your green card application is pending. Without advance parole., you will be deemed to have abandoned...

Can I change H1b visa interview location from India to Canada?

It is likely that you will have to go to India for your interview.

J1 application while CR1 application is pending

Many J1 require that you live in your home country for 2 years when the J1 visa expires. So it would be best to not apply for the J1.

What specific format does an invitation letter to get a visa for my grandmother need to have? What do I have to address?

The letter needs to be addressed to the US Embassy in Mexico. There is no specific format but it should show that you will provide for her...

Passport renewal of a US citizen minor in the Philippines

He needs to renew his passport at the embassy in The Phillippines. Your parents need to look at the requirements for passports in the Philippines.

Yes you should bring all of these certificates with you or submit them in response to the RFE.

We got i-601a approved!!! what is next?

You need to schedule an interview at the appropriate US consulate.

Oath letter

Generally it can take up to several weeks.

FORM I-484 current USCIS Status. I have Deferred Action what should I put? I

You need to enter the status you had when you entered the US. So whatever status you were when you entered the US is what you would put on the I485...