One must always answer interview questions honestly or risk denial, even years later.

Can I go to stamping on approved H1B, without joining in the full time JOB?

It would be a misrepresentation to obtain a H1B visa and/or admission without intent to join the company.

Green card EB1c category..?

It is possible that quitting EB1.C employment will cause issues for the GC and later possibly your natz depending on your return to employment.

Can my spouse and I still go through consular processing if we got married and then she goes home?

Consular processing will require a police clearance and fraud connected to the applicant's name can be the basis of denial.

While extensions with the same employer is 1 year. O-1 extensions for a different employer may be granted for 3 years.

Mom is US citizen, from the Philippines. Son was born in Germany, is married and was petition by mom in 2015?

An immigrant petition priority date is governed by the country of birth, Germany.

How can a USA citizen living in Mexico sponsor a fiancé for a green card and continue to live in Mexico? Marry the fiance, Sponsor the spouse for...

How to correctly fill DS-260?

So, many questions. So, little time. I would recommend a consultation with an immigration attorney.

How to interpret these questions in DS-260 form?

1) visa cancelled, with explanation, 2) yes, with record

I am married to a US citizen and in the process of I-130 petition. Can we file taxes separately?

Attorney Capriotti wisely advises, "NO, you can NOT file as single. But, you can file as 'married, filing separately'."