What qualifies as a national security or public safety threat?

If the background check or other information uncovered during the review of an individual's request for deferred action indicates that the individual's presence in the United States threatens public safety or national security, he or she will be ineligible for an exercise of prosecutorial discretion. Indicia that an individual poses such a threat include, but are not limited to, gang membership, participation in criminal activities, or participation in activities that threaten the United States.