Is it allowed to convert B1/B2 visa to H1B visa if someone finds a job? Yes, if subject to lottery, the window will open March- April time frame

Filing I-130 is the initial step and shows an immigrant intent. Returning on B-2 is risky as he is unlikely to show non immigrant intent

Conviction could trigger removal. Mere arrest is unlikely to affect an extension appliation. Travel is not recommended

If you are a USC, you can petition and your father can seek AOS despite the overstay or violation of status.

You could work with both companies if the next H-1B was a concurrent filing. If not, you will have to choose.

I do not recommend Day 1 CPT courses to continue with current employment. It is abuse of F-1 visa process. If you genuinely wish to study, apply...

Can I Change from H-1B to B1/B2 While Job Hunting and Return to H-1B Later? This time is usually not recommended as USCIS takes an adverse stand...

If timely filed, you may continue working. Be vary of "legal team" filing USCIS petitions and applications. If there is no attorney on the team,...

Would I be able to get him back to USA (from India) to me at a later point of time through a provisional waiver ? A better option is to apply...

You will need a family law attorney for divorce. You will need to hire a criminal lawyer if charges are pressed against you.