The publics' attitude toward America's military, more like. It is easy to get people to spy on their own country if they already have a hatred for it, and that _is_ a national security risk. That is not to say you must be blindly patriotic, but if you hate your country, hate your military, and only want to burn everything to the ground rather than reform, that is a massive insider threat that is exploitable by our adversaries. If you don't think the excessively high number of america-hating americans is concerning, then I don't know what to say.