Mutant Response Division

Mentioned in passing by Nick Fury, the Mutant Response Division is responsible dealing with mutant issues.

It is unknown as to whether or not it is a part of S.H.I.E.L.D., or a separate entity, although contextually it sounded as if it were separate, with an inter-service rivalry.

In the Wolverine and the X-Men animated series, the MRD is the government organization which starts hunting mutants using Sentinels, thereby launching "Project Wideawake".