You need a security clearance to qualify for a federal job

False: Not all jobs require a security clearance. You can find this information in the job announcement.

However, all Federal positions require the candidate to undergo a suitability adjudication process to determine if the individual is suitable for Federal employment. This means that in addition to meeting the qualifications of a job announcement, an individual is determined likely or not likely to be able to carry out the duties of a Federal job with appropriate integrity, efficiency and effectiveness.