Chapter 34. Use of “District of Columbia” by Certain Persons. § 22–3401. Use of “District of Columbia” or similar designation by private detective or collection agency — Prohibited. § 22–3402. Use of “District of Columbia” or similar designation by private detective or collection agency — Penalty. § 22–3403. Use of “District of Columbia” or similar designation by private detective or collection agency — Prosecutions for violations.