You cannot petition for your parents unless you are a US citizen. The earliest that you can apply for naturalization is after you have been a lawful resident for at least 2 years and 9 months and were married to a US citizen during the entire time. If you want your parents to visit you before that time, they can always apply for visitor visas at the US consulate.
Answered on Sep 30th, 2013 at 10:31 AM