Your new question may prompt yet another observation from your friends with long memories:
This sharing of information between agencies must mean that Jamie Gorelick's "wall of separation" is now seen as no longer -- hmmm, what adjective seems right here? -- useful.
What may not be understood by readers in that last comment is that Rover engines found in any vehicle have long been a target of EPA. And any found with without dealer plates (exempted) or meant to be used only on private tracks have long been a target of DOT.
The use of DHS implies that agencies are now working together in a manner that expands the danger to the citizen from all unaccountable bureaucracies. Banana republic in full swing?