If I come to the US with student visa and graduate in an engineering field, can I get another degree for instance in Art or

You can, but it will require you to keep enrolling in classes, attend them, work with your DSO on issues related to your immigration paperwork, etc.

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How to get visa stamp?

You should contact the consulate and explain the situation before you are going to leave the US.

Am I eligible for H1B Out of Cap after I-140 approval?

Are you asking if you would qualify for an AC21 extension? You should speak with your company's attorney about it.

I-20 for Spring Semester 2017, on B1/B2

He can travel, if he holds a valid B visa, and inquire about possible studies in the US. he even might be able to change his status in the US.

Staying beyond I94 expiration date with new H1b approved with a gap between I94 expiration and new Hi1b approval date

Usually, it is the validity of the petition that is controlling your status. Speak with an attorney who was processing your paperwork.

Can someone carry my green card with them when traveling to my home country, so that they can give it to me?

They can, but you should give them a letter of authority to do so.

Any thoughts or idea, why USCIS is not updating Adjustment of Status Filing Charts from the Visa Bulletin for October, 2016 ?

Before publishing its next month bulletin, USICS gives updates on what will happen according to their forecast.

Spousal Visa - is my US citizen spouse (sponsor) required to support me financially?

Your US spouse has to support you financially along with the joint sponsor, if any.

Can I apply to be a Canadian citizen while I'm here in US. I just approved for asylum and my sister a Canadian citizen?

You would need to find a Canadian attorney for this.

Hi, I'd like to know about the citizenship interview and test for non-English speaker.

to be able to apply for citizenship in a new place, your dad have to reside there for at least 3 months.