The correct way to do this is apply for a K1 fiancee or K3 Spouse Visa. The process takes 6 to 9 months or more in which she is supposed to wait outside of the U.S. and neither visa is faster to process than the other. Here is a link:

http://travel.state.gov/visa/immigrants/types/types_1315.html

I know that you may not want to wait, but the only other method is risky. People do it all the time, but it is basically violating the Immigration law. This is because if she uses a tourist visa or Visa Waiver to enter the U.S. when she really has the intention of staying, she is lying to the U.S. government about her intention. If she discloses the truth when she is entering, they will turn her around and send her back. If she lies about her intent, well.....she's lying and can be deported because of it.

With more details, the three ways are essentially below:

1) The K-1 fiancee visa takes 6 to 9 months, but you must have met before during the last two years in order to process it. The I-129F will cost $340 plus a $350 fee for the visa processing fee. After she enters the U.S., then you have to marry and then you have to pay $1070 for the I-485 and she will have to wait about 5 to 7 months and gets another interview that you attend with her so that she can get Residency.

2) The K-3 spouse visa takes 6 to 9 months, you must be married. The I-129F will cost $340 plus $420 for the I-130, and $350 for the visa processing fee. Then after she enters the U.S., you must still file the I-485 for $1070 and wait for the Marriage interview about 5 to 7 months later.

3) The CR-1 visa (or IR-1 if your marriage is more than 2 years old) takes about 1 year or so. You must be married. The fees are $420 for the I-130, $330 for the visa processing fee, $88 for an Affidavit of Support fee. But once she enters the U.S., she enters as a Resident and she does not have to file (or pay for) an I-485 nor does she have to attend an additional interview. She just gets her Green Card in the mail a few weeks later.

So the K-1 and K-3 are faster but generally more expensive. The CR-1 (and IR-1) are slower, but generally cheaper. And no, there is no middle-visa that she can use to enter the U.S. while that process is pending. She will most likely have to wait outside.

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