Accordingly, we hold that the Committee has Article III standing to seek enforcement in federal court of its duly issued subpoena in the performance of constitutional responsibilities.
Therefore, we affirm the judgment of the district court in part.
Consideration of McGahn’s other contentions — including threshold pre-merits objections that there is no subject matter jurisdiction and no applicable cause of action, and potential consideration of the merits if reached — remain to be decided and are remanded to the panel to address in the first instance.

20200807 Second Cir en banc McGahn