(a) In General.—(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) Misuse.—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.