I don't think that your Grandfather's income would qualify. It does depend on the number of dependents he has. But on the latest 2013 instructions it appears to start at $19,387.00. You can check USCIS at http://www.uscis.gov/files/form/i-864p.pdf. My advise is to consult with an experienced immigration attorney in your area to properly advise you further.
Attorney answers to questions are for general purposes only and do not establish an attorney-client relationship. Please contact at the Law Office of Daniel Corno, (832) 767-2922, 1535 South Richey, Pasadena, Texas 77502 firstname.lastname@example.org, elabogadodaniel.com
NYC EXPERIENCED IMMIGRATION ATTORNEYS
Phone: (866) 456-8654;
The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.
Att. number 917-885-2261 This advice does not create an attorney client relationship. No specific legal advice may be offered by the lawyer until a conflicts check is undertaken. Information sent through a web form or via email may not be treated as confidential. Please accept my apologies for spelling mistakes.
Law Office of Alena Shautsova , New York Immigration Attorney http://www.shautsova.com
Law Offices of J Thomas Smith J.D., Ph.D
11500 Northwest Freeway, Suite 280
Houston, TX 77092
NOTE: Responses are for the education of the community at large and is not intended to be "legal advice." No attorney-client relationship is established by responses or comments.