Can I be Aligible for a Visa after being illigal in the united states for 14 years and voluntarily comming back to mexico

Unfortunately there does not appear to be any way for you to legally come back to the States unless one of your parents obtains permanent resident status, you marry someone with permanent status, a USC sibling sponsors you, or you have a work skill that would allow you to be sponsored for the green card. You would also have to obtain a waiver if you were eligible under the first two sponsorships.  Under the last two, you would have to wait 10 years as you are under the bar and a sibling or potential job cannot give you a waiver. Your departure from the country triggered a 10 year bar against your return. Had you remained in the States, you would have undoubtedly been eligible for the President’s program of Deferred Departure for Childhood Arrivals (DACA). But part of the requirements of that program are continuous residence from June 15, 2007 to the present and your physical presence in the country on June 15, 2012. Perhaps there will be another avenue of relief in the future, but the above paths are all I see now. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence  

First, you have to have a qualifying sponsor (family member or employer) to get a green card.  Assuming you have that, you would also need a waiver of the 10-year bar that applies to anyone who has been in the US without proper authorization for over a year.  You can apply for that waiver at the US consulate abroad.