From the website: For Competitive Service roles: All United States citizens and nationals (residents of American Samoa and Swains Islands) are eligible to appl

From the website: For Competitive Service roles: All United States citizens and nationals (residents of American Samoa and Swains Islands) are eligible to apply. For Excepted Service roles: All United States citizens and nationals (residents of American Samoa and Swains Islands) are eligible to apply, and applicants must not be current GSA employees or contractors.