What to write on N400 form where it's asking Alien reg number

If you don't one, write "None" or "N/A".

What kind of document i need from IRS when filing for citizenship?

You will have to include evidence that you were not required to file under the law. I would talk to an experienced immigration attorney to review...

How long is the waiting period now for approval of a I130?

You can use this link to check USCIS processing times- https://egov.uscis.gov/cris/processTimesDisplayInit.do

N-400 Case Is In Line For An Interview

There's no definite time frame. it truly depends on the caseload of the immigration office handling your petition. Some are taking up to a year....

Can I get my husband a green card?

Yes you can. You can file a Petition for Alien Relative and Adjustment of Status application. Be sure to hire an experienced attorney to ensure you...

It typically takes the USCIS 6-8 months to adjudicate an I-751 application. You can check the current processing times on the USCIS website...

My wife is a student on F1 visa, Can i visit my wife on B2 visa?

Yes, you can. Submit documents that prove that your stay is intended to be brief and that you have no immigrant intentions here. You should also...

Can I fill out my AOS I-485 and required forms with my married last name, if I have not legally changed it?

Yes you can. Your marriage certificate is proof of legal change of name for immigration purposes.

The general "physical presence' element for citizenship requires that do not spend more than 6 months out of any given year of the 5 years...

You should contact an experienced immigration attorney with knowledge of criminal issues.