Yes, if you are a US citizen 21 years or older. You will need to file Form I-864 affidavit of support attesting to your financial ability to undertake the obligations contained in the affidavit. If you are unable to do so, have a friend or family member [being a US citizen of green card holder] who has the means to join you as co-sponsor.
Answered on May 13th, 2013 at 3:23 PM