I hope you consider seeking help of an experienced immigration attorney in this situation.

What can happen if I divorce?

It helps to consult with an immigration attorney BEFORE finalizing the plea with the criminal court.

Overstaying denied H1-B,by 110 days.

You can try going to your home country and try to convince the consulate there if you have a justification.

What can be my immigration status?

staying in marriage could provide a remedy during deportation but divorce prevention is a two way effort and not always possible.

I am applying for adjustment of status and my spouse have never filed taxes because she was dependent can we still go ahead it ?

Yes, it is possible.

I am canadian and was married to a U.S. citizen for two years.

At times you can but not always. It all depends upon your specific situation and so please consult n experienced immigration attorney.

Is there an international immigration blacklist?

Many countries share information with each other. For remedy with Australian legal issues you should resort to Australian system.

Can I change my status from H1b to L2 to take a break for couple of month and come back on H1B when i want to work again.

change of status is possible in certain cases but not in others. Your question needs to provide more information to satisfactorily answer. ...

RFE, LCA change before H1B approval?

Your attorney should be able to answer your question best.

Why my son can not change his new name when he goes to citizenship test and pass citizenship test?

The officer is right. He can not do your son's legal name change.