Filing

Your wife cannot file for your sister. If you were a U.S. Citizen you would be able to file for your sister under the family fourth preference...

You can send in copies and you need to bring the original to the interview if you are called for one.

Will this new law tht obama enforced help my husband?

No, while the regulations are not yet out, your husband would have continually resided in the U.S. before January 1, 2010 and have been physically...

Can i file for two separate permanent residency applications, at the same time?

Your brother can file for you and if you marry then your spouse will also be able to file for you. If you have overstayed your visa by 180 days...

Is Naturalization possible in three years ?

You will have to wait until 2018. The three year naturalization timeline only applies if you are still married to the same individual that filed...