5 U.S.C. § 5723: Travel and transportation expenses of new appointees and student trainees

travel expenses (A) of a new appointee, or a student trainee when assigned on completion of college work, to any position, (B) of a new appointee to the Senior Executive Service or the Federal Bureau of Investigation and Drug Enforcement Administration Senior Executive Service, or (C) of any person appointed by the President to a position the rate of pay for which is equal to or higher than the minimum rate of pay payable for a position classified above GS–15 pursuant to section 5108; transportation expenses of his immediate family and his household goods and personal effects to the extent authorized by section 5724 of this title ; and the expenses of transporting a privately owned motor vehicle as authorized under section 5727(c) of this title ; An agency may pay travel and transportation expenses under subsection (a) of this section only after the individual selected or assigned agrees in writing to remain in the Government service for 12 months after his appointment or assignment, unless separated for reasons beyond his control which are acceptable to the agency concerned. If the individual violates the agreement, the money spent by the Government for the expenses is recoverable from the individual as a debt due the Government. An agency may pay travel and transportation expenses under subsection (a) of this section whether or not the individual selected has been appointed at the time of the travel. In the case of an appointee described in subsection (a)(1) who has performed transition activities under section 3 of the Presidential Transition Act of 1963 ( 3 U.S.C. 102 note), the travel or transportation shall take place at any time after the most recent general elections held to determine the electors of the President. This section does not impair or otherwise affect the authority of an agency under existing statute to pay travel and transportation expenses of individuals named by subsection (a) of this section.