Passing through TSA with minor who is a member of extended family
Does TSA require any extra documentation for security when you are passing through security with a member of one's extended family who is a minor (and doesn't have a gov't ID)? We're taking a cousin along on a domestic flight and he doesn't share our last name. I've read that it's not necessarily an issue, but some people bring a travel consent form signed by the minor's parent(s) to be extra safe.