There are no restrictions however it triggers a query in some cases over bona fides of the cap petition. Discuss with a lawyer before you proceed....

Yes, you can pursue EB-5 along with H-1B and an employer can also petition I-140. Just ensure you have proper representation so you have good...

Yes, multiple employers can filed during the grace period. You want to ensure your have at least 60 days authorized stay too.

Keep good records. If they find it and USCIS denies as untimely filed, you can file a motion to have it considered.

B-2 can be sought for a short trip abroad, it is not to be used with an intent to stay for extended periods of time.

Yes, you will be eligible if you work abroad for the company for one full year. It is an employer's petition so they file the petition.

Victims of crime who cooperate with the police as witness are eligible for U visa. You may pursue it if you wish.

It depends on when the mistake was discovered - if post filing, it can be withdrawn and a corrected one filed.

Domestic battery arrest can have serious immigration consequences depending on what is on record even if not pursued in court. This will have to...

One would have to review the RFE and the application to consider the timeline and whether it was properly filed. Have an attorney represent you. ...