How will a 1099c affect my tax return debt discharge is 621.12

Cancellation of debt is generally considered to be taxable income unless it falls under an exception or if it is excluded by law from gross income....

What would happen I f I don't carry my immigrant wife on my taxes.Would she get rejected from becoming a US citizen

If your wife is applying for citizenship then USCIS will request 3 years of her tax returns, assuming that you are a US citizen; if not then 5...

What are the implications on estate tax for property acquired from a foreign parent (who is not a US resident)

No but you may be required to file Form 3520 and other information reporting forms. The penalties can be severe for not reporting on these forms so...

What should I do regarding taxes?

You will eventually get an underreporter notice. You can address it now by filing an amended return to avoid failure to pay penalties and interest....

How to obtain federal tax income return ?

You file the return with the ITIN application. An ITIN will be assigned to you regardless of your illegal status.

Any IRS attorney please answer

There's probably no tax, but there are definitely some reporting requirements. FBAR, Form 3520, and FATCA are just some of the reporting...

If you're married, then also a family law attorney to hedge against potential contingencies.

You could try the IRS international hotline. https://www.irs.gov/uac/help-with-tax-questions-international-taxpayers

If I give up a green card after having it for only 3 years, do I have to pay an exit tax / continue to pay world wide tax?

Section 887A ("exit tax") applies to covered expatriates. Covered expatriates are US citizens and long-term residents. Long-term resident is...

What if I go to naturalisation interview with the year 2016 tax return that doesn't include my spouse name?

This is something you should speak to an immigration attorney about; my understanding is that it's acceptable to file married filing separately but...