My fiancee was just denied entry into the country and sent back to Brazil (on tourist visa) What is the best course of action???

You should contact an immigration attorney. I agree with attorney Ivakhnenko that there is more to your story than what you are stating. Your...

Which immigration status can I get to be able to stay in the US with my 15 years old daughter who is a US citizen?

In order to stay for a longer time your best option might be to find an employer, who would be willing to sponsor you for a work visa.

My great great grandmother was an American citizen. Can I get citizenship if I can prove it?

Contact an immigration attorney. More facts are needed.

U.s spouse died before petition of wife was done, but visa was denied at embassy what can I do

You might be eligible for relief. Contact an immigration attorney ASAP.

Each time you enter, you will be issued a new i-94 number.

Can I get b-1 visa if my funcee already apply for me k-1

Your B-visa application will be denied.

If I go with b1 visa my funcee already apply for me k-1 can I marry her and stay there ?

No, you cannot.

Is there a way to petition my boyfriend who is outside the USA if i am only a green card holder?

No, you cannot petition for him. You will either need to become a U.S. citizen, get engaged and then petition for him as your fiancée or marry him...

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I-130 question: I am a naturalized citizen from an African country as of Sept. 2013. I am filing for my OUT-OF-STATUS husband.

I agree with my colleagues.

How long from the time I file for my wife's green card does it take for her to be able to come here?

I presume you are a U.S, citizen. You will need to file a petition for your wife. The processing time of the petition is currently quite long (up...