I am a student with F1 visa since January 2014. My sister (a US citizen) applied for an immigrant visa for me in 2012 with form I-130. I am about to apply for change of status with form I-485. What are my chances?
It will be denied. You cannot file the I-485 until your Priority Date on the I-130 is current. If you have the approved I-130, you can track the Priority Date on the Visa Bulletin. (see below). The filing of the I-130 does not grant any immediate immigration benefits. The typical wait time (but depends on your nationitly) is about 12 years. http://travel.state.gov/content/visas/english/law-and-policy/bulletin.html
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