((a)) ** .—**
((1)) The Secretary shall prohibit any employee of the Department who the Secretary or the Inspector General of the Department determines has knowingly misused a purchase card from serving as a purchase card holder or approving official.
((2)) Such a prohibition shall be in addition to any other applicable penalty.
((b)) ** .—** For purposes of this section, the term “misuse” means—
((1)) splitting purchases;
((2)) exceeding applicable purchase card limits or purchase thresholds;
((3)) purchasing any unauthorized item;
((4)) using a purchase card without being an authorized purchase card holder; or
((5)) violating ethics standards.