A Reminder of Executive Order 12107 on Federal Employees
Sec. 8. (a) The investigations conducted pursuant to this order shall be designed to develop information as to whether the employment or retention in employment in the Federal service of the person being investigated is clearly consistent with the interests of the national security. Such information shall relate, but shall not be limited, to the following:
(1) Depending on the relation of the Government employment to the national security:
(i) Any behavior, activities, or associations which tend to show that the individual is not reliable or trustworthy.
(ii) Any deliberate misrepresentations, falsifications, or omissions of material facts.
(iii) Any criminal, infamous, dishonest, immoral, or notoriously disgraceful conduct, habitual use of intoxicants to excess, drug addiction, sexual perversion.
(iv) Any illness, including any mental condition, of a nature which in the opinion of competent medical authority may cause significant defect in the judgment or reliability of the employee, with due regard to the transient or continuing effect of the illness and the medical findings in such case.
(v) Any facts which furnish reason to believe that the individual may be subjected to coercion, influence, or pressure which may cause him to act contrary to the best interests of the national security.
(2) Commission of any act of sabotage, espionage, treason, or sedition, or attempts thereat or preparation therefore, or conspiring with, or aiding or abetting, another to commit or attempt to commit any act of sabotage, espionage, treason, or sedition.
(3) Establishing or continuing a sympathetic association with a saboteur, spy, traitor, seditionist, anarchist, or revolutionist, or with an espionage or other secret agent or representative of a foreign nation, or any representative of a foreign nation whose interests may be inimical to the interests of the United States, or with any person who advocates the use of force or violence to overthrow the government of the United States or the alteration of the form of government of the United States by unconstitutional means.
(4) Advocacy of use of force or violence to overthrow the government of the United States, or of the alteration of the form of government of the United States by unconstitutional means.
(5) Knowing membership with the specific intent of furthering the aims of, or adherence to and active participation in, any foreign or domestic organization, association, movement, group, or combination of persons (hereinafter referred to as organizations) which unlawfully advocates or practices the commission of acts of force or violence to prevent others from exercising their rights under the Constitution or laws of the United States or of any State, or which seeks to overthrow the Government of the United States or any State or subdivision thereof by unlawful means.
(6) Intentional, unauthorized disclosure to any person of security information, or of other information disclosure of which is prohibited by law, or willful violation or disregard of security regulations.
(7) Performing or attempting to perform his duties, or otherwise acting, so as to serve the interests of another government in preference to the interests of the United States.
(8) Refusal by the individual, upon the ground of constitutional privilege against self-incrimination, to testify before a congressional committee regarding charges of his alleged disloyalty or other misconduct.
https://www.archives.gov/federal-register/codification/executive-order/10450.html?template=print