After my son's Oath taking for US Citizenship can he petition me and not need to come home to the Philippines to be petitioned?

Agree with counsel, if he is 21 he can file for you.

What's a position of somebody who applies for refugee status and is denied but got married to a USC during the process?

It depends how the entered the U.S. and whether or not they are in removal proceedings, and other factors. See a lawyer.

In order to establish eligibility for the I-601A, you must show extreme hardship to your USC or LPR spouse or parent. All evidence should relate...

Do I need to file a new H1B petition or can I get the existing H1B petition renewed ?

It seems that you are not in the US in H1b status and so you need a new H1b visa.

What can be expected at port of entry by a visitor coming to US on B-2 visa?

They will ask the purpose of her trip and how long she is staying. If she answers appropriately there should be no problem.

Can i join my wife to Canada

You should contact a Canadian immigration attorney with that question. However it seems to me that if you have not been convicted of a crime, then...

What is the best way to get citizenship ? marry an american or get the dream act ?

Sounds like they are not eligible for DACA. Congress has not passed the Dream Act. If you marry and file for him, he may be able to immigrate to...

My girlfriend and my son overstay to Philippines for 1 year . what should they do to get back here in America ?

File a visa petition for your son to immigrate.

Is my H 1 B with employer A still valid after joining employer B? What happens to my I-94? Can I still use the previous I-94 ?

If it was filed as concurrent h1b's this may be possible. It depends what you filed.

How would I report a spouse who obtained asylum and legal status by presenting false documents?

Contact Immigration and Customs Enforcement, Fraud Detection Unit.