Detention at ports
I11Designated immigration officers
1
The Secretary of State may designate immigration officers for the purposes of section 2.
2
The Secretary of State may designate only officers who the Secretary of State thinks are—
a
fit and proper for the purpose, and
b
suitably trained.
3
A designation—
a
may be permanent or for a specified period, and
b
may (in either case) be revoked.