H1b petition expired in 2010 is eligible for extension in 2012 by new employer?

it does not matter whether you call it a H-1N extension or fresh petition. A new H-1B will be filed by Company C that will not be subject to the...

I am on L1B visa and quitting my Job. I will be leaving US within 6 days of quitting the job. Any concerns at port of Exit ?

Based upon these facts, you should be good.

Is it possible to apply for H1B by employer where your working under AC21 , while your I-485 ( in Eb3) pending.

I agree with Attorney Schmidt.

I am on L1 B, my visa and I 94 both are expiring in sep 2012. If I go to Canada or Mexico for 4 days, does I get new I 94.

You will also need a new visa-I presume you are going to get one from the US Consulate in either of the two countries.

Can I Start my Green Card Process While I'm in OPT.

It may be a better idea to first switch to the H-1B. In any case, if you must continue to remain in the US while your GC is pending, you will have...

Having got admission to a Masters course, I want to change my Visa from H4 to F1. Can I get the stamping done in Canada?

Attorney Pollock has accurately summarized the situation. You may start attending school and can apply for COS later.

Applying for COS to F1 (from H4) again after stamping denied in home country.

The approval of your F-1 depends upon the merits of your case. Without knowing why the initial COS was denied, it is not possible to comment. ...

Denied citizenship

You can refile around the five year mark-and I would advise that you retain a local immigration attorney who can assist you throughout the...

You could do either. Coming to the US on L-1B will not effect your GC. You can come and file for AOS. As you are an Immediate Relative (Spouse)...

I am irish national wishing to travel to the US for business within a company what are my entitlement to a visa in immigration?

Some of the visa options that may work are the L-1, B-1 in lieu of H-1, maybe even an E. However, whether any of these would be available to you...