&gt; There&#x27;s plenty of people with severe mental illness who have security clearances.<p>Yes, but only if they lie or waffle in their applications, because mental illness is specifically discussed as a reason to deny clearance.<p><a href="http:&#x2F;&#x2F;www.military.com&#x2F;veteran-jobs&#x2F;security-clearance-jobs&#x2F;psychologial-conditions-and-security-clearances.html" rel="nofollow">http:&#x2F;&#x2F;www.military.com&#x2F;veteran-jobs&#x2F;security-clearance-jobs...</a>