A pending I-130 does not extend their lawful status. If they leave, CBP might notice that they might intend to immigrate, when they return.

Assuming it is not an extension of your prior EAD in the same category, then no, the new EAD application will not extend your employment...

If the job offer does not require the experience you gained on the job, then you cannot use it. If you have gradually increased your job duties...

CIS will respond to the congressional inquiry. Allow 90 - 120 days.

It depends what type of visa it is. For an I-140 it is the date you filed with the Department of Labor. For other family and employment based, it...

Send it back to USCIS. Any CIS office will do.

People from Pakistan do need a visa to visit the United States.

You can continue in OPT for the duration and get the H1b after that.

There is no difference, it is the number of all receipts.

The U visa will not interfere with your application. You may wish to consider whether your spouse can adjust status in the US or will need to...