I have lived in the U.S. since I was 10. I am a citizen and consider myself as red-blooded an American patriot as the next girl. I also give blood regularly. Every few months, there is a blood drive at my office building. The appointment system online includes a precheck to see if you’re eligible to donate, and one of the questions is: “Have you lived in Europe for more than five years?” My answer is “Yes,” so I am disqualified. I looked this up, and it has to do with the prevalence of mad cow disease there. Since I’ve lived in America for two-thirds of my life, my question is: Should I lie on the precheck and donate blood anyway?