D.C. Mun. Regs. tit. 16, r. 16-104
For the purpose of discovering violations of this chapter, the Department may at any time investigate the transactions, business, and records of any person subject to this chapter relating to matters covered by this chapter.
If any records subject to this section are located outside the District, the registrant shall at his or her option, either make them available to the Department at a convenient location within the District, or pay the reasonable and necessary expenses for the Director of the Department or his or her representative to examine them at the place where they are maintained.
The Director of the Department may designate representatives, including comparable officials of the State in which the records are located, to inspect them on his or her behalf.
D.C. Mun. Regs. tit. 16, r. 16-104