YOu cannot file the I-485 if the priority date is not current and the priority date for a sibling of a US citizen petition will not be current for about 10-12 years.
Your father can petition for his sister, but she cannot apply for adjustment on form I-485 until her priority date becomes current, which can take at least 12 years if she is still present in the US.
Consumers can use this platform to pose legal questions to real lawyers and receive free insights.
Participating legal professionals get the opportunity to speak directly with people who may need their services, as well as enhance their standing in the Lawyers.com community.