(3)
authority for agencies to appoint, without regard to the provision of sections
3309 through
3318, candidates directly to positions for which—
(A)
public notice has been given; and
(B)
the Office of Personnel Management has determined that there exists a severe shortage of candidates or that there is a critical hiring need.
The Office shall prescribe, by regulation, criteria for identifying such positions and may delegate authority to make determinations under such criteria.