From Hamdi v. Napolitano, 620 F.3d 615 (6th Cir. 2010):
The proper interpretation of the "on behalf of" language in § 1252(g) is a matter of first impression in this circuit (and apparently in all circuits). We review de novo such questions of statutory interpretation, United States v. Parrett, 530 F.3d 422, 429 (6th Cir. 2008 ...
From Hamdi v. Napolitano, 620 F.3d 615 (6th Cir. 2010):
The proper interpretation of the “on behalf of” language in § 1252(g) is a matter of first impression in this circuit (and apparently in all circuits). We review de novo…