Wife just became permanent resident through marriage but now I want a divorce. Will it cause her to get deported?

No It will not cause her to get deported, she will not lose her permanent resident status too.

Is it possible to transfer to a different host company for J-1 visa?

Yes it is possible to file another J-1 petition. All the best.

Can I refund any payment I made in processing my J-1 visa if I get declined?

No, you will not be given a refund if you get declined. They still did the work and decided to decline you so you owe them that money for doing the...

Am I eligible for applying US citizenship after moving to India on Re-entry permit with the same employer?

You might be eligible, talk to an immigration lawyer in private and discuss your status to confirm. All the best.

Is DACA available?

Fortunately DACA is still available currently. Refer to the link below to find out the requirements. Contact an immigration attorney if you need...

How soon can a person apply for another tourist visa once she leaves the US after being here for 12 month on a tourist visa?

It is advisable for her to spend more time in her country than she spent in the USA with her tourist visa. All the best.

H1b Extension during 6th year

Yes, if you transfer while you have an approved I-140 your H1 will be valid 3 years from now. Regarding your other question you are best of asking...

The first entry for a green card holder

It does not matter where you applied, advise them to choose the place which is convenient for them. All the best.

Immigration Lawyer for student visa ????

Looking at your question it is very obvious that person is not aware of the questions the officers would ask and how to respond to those questions....

Yes you can file a concurrent O-1, all the best.