I am right now in Brazil (my home country) with my husband (US citizen). I hold an F-1 visa (5th year). Can I return to the US?

You are thinking ahead that is a good thing. Your future planning should be done right for it to work out.

Non profit organization may pass the cap exempt organization criteria. Check with your employer if they know that they qualify and if yes ask them...

Are there any good immigration attorneys in Indianapolis, who also know criminal laws.

Criminal immigration is a very specific area and frequently advice needs to be tailored based on detailed research. Obviously you could not find...

H1-B approved but Spouse /2 kids H4 Denied.

You should seriously consider talking to an immigration attorney now that your family needs help. Best Wishes!

How long should be expected before receiving the green card after starting the application process (from a current H1B status)?

EB3 category is currently facing a minimum wait time of 2 years. Having said that processing times are difficult to guess for a specific case...

H-1B expires in June 2015 (No more extension left).Employer is ready to file green card for me,are we too late to file now?

It is better late than not at all but you could start as soon as possible to not lose your employability in U.S.

Will my removal status automatically erase if I am approved for DECA? Or do I still have to petition to erase that regardless?

DACA approvals are granted to less serious deportation matters, it would not terminate it.

DSO at your college/ university should be able to give you all the answers.

understanding the importance of criminal consequences on immigration status is necessary in this situation.

Right now am in H1B visa and i work for an employer in State of Indiana, Can i start a company in USA?

Depends upon what are your future goals to do with it.