It is a fairly good bet that not all security clearance applicants read the fine print in the instructions section before filling out the Questionnaire for National Security Positions (SF-86). Under the “Penalties for Providing False or Inaccurate Information” section it states the U.S. Criminal Code (title 18, section 1001)

Guideline G: Alcohol Consumption is one of the grayer areas when it comes to evaluating a person’s character, reliability and trustworthiness and deciding whether to grant them eligibility for a security clearance. Alcohol consumption usually in and of itself does not end up disqualifying someone, but rather the associated conduct