chriscross: from what i've learned over the admissions process, USMA along with the other service academies feel that its important that the officers they graduate represent both the soldiers they lead and the american public they defend. Along with everything else that a candidate brings to the table, background plays an important role as well.
That said, every candidate must display excellence in academics, leadership, physical readiness, etc to be competitive for an appointment to the corps. While i'm not going to doubt that having a hispanic background was looked at by admissions, my cum laude society acceptance, leadership in and out of school, and potential contribution to Army athletics had a much greater role in my admissions process. I'm definitely NOT trying to say anything about myself, i've struggled much in all those aspects but wanted to find ways to improve myself so I could hopefully one day bring that to West Point.
Whatever way you find to bring out the best in yourself will work plenty. Don't expect admissions to be any 'easier', the nomination, CFA, and overall package are on you the individual. Best of luck!
West Point 2013 appointee (sp?)