When should I file for citizenship ? I have had my Green Card since May, 2007.

Discuss the reasons for your stay abroad via a confidential consultation with an experienced attorney to see if you qualify for naturalization.

Will I be elidegible for EB1 in following scenario? What all issues can happen? Can come back on H1B or L1-A will be needed?

I am curious why the company did not seek EB-1 for you under Multinational Manager or Executive category. There is no wait period for it and you...

OPT to H1B while married to a US citizen

It is unlikely to "jeopardize;" however you will have to make some decisions regarding residency sooner than later.

My employer withdrew H1b extension case and is filing for h1 with consular notification?

If you were out of status when the petition was filed, the immigration attorney probably advised your employer to file consular processing rather...

Am I enable to apply H1-B visa? or am I qualify to apply?

Sometimes experience is used to qualify for an H-1B position.

I agree with Rajesh. Such situations require careful analysis by a business immigration attorney.

Can I stay in US when my H1b application is processing but OPT expires?

Ensure that the employer sought change of status. If they are seeking you to consular process, you should timely leave on the expiration of your OPT.

My wife does not want us to file taxes jointly this year. Can that affect my I 751 application?

If you are married, joint filing is recommended to support your contention of bona fide marriage.

I'm a green card holder thru marriage to a US citizen. Can I still apply for a renewal if my spouse is convicted of a crime?

Timely file joint I-751 within the 90 day window.

H4 to F1 status

I agree with Charles. If she entered on H-4 last, then that is her current status.