Assuming closed means you pled guilty, it could affect your eligibility depending on the charges against you. For example, speeding is normally...

Owning a company, if you have a work permit, does not disqualify one from adjustment of status.

Your sister should provide the true reason for her visit, whatever that reason may be. Yes, they will consider her prior denial. I agree that it...

Since you are permitted to work in such status, you should also be eligible to get an ITIN or SSN.

The transcripts don't help much to show that you are living in the same house, though, so you might consider sending a copy of the returns.

You are subject to the Adam Walsh Child Protection Act. If you can show you have zero chance of endangering any child, there is a chance you can...

Your parents are allowed to apply for tourist visas. Whether they will be approved will depend on how strong their proof is that they do not...

It depends on what you mean by your "immigration case". Perhaps you should see a lawyer.

The grace period is discretionary and it's for 90 days. You could try arguing it's 90 days from May 15th, and perhaps USCIS would agree.

No, you do not have to leave the country if you file a change of status from B1/B2 to H1b.