I was considering signing up for the national blood marrow registry. The biggest negative though is that they do an oral swab for DNA and they store it in their database for 40 years in case there's a match. I don't trust the government with my DNA for 40 years, especially these days, Patriot Act, etc. Normally, the government would need a warrant to get my DNA, and I feel insecure just giving it up to them. Does anyone know if the National Marrow Registry has safeguards to prevent abuses of power like that? Give me your thoughts.