ents conduct searches. See Seljan, 547 F.3d at 1012 (Callahan, J.. concurring) (citing, e.g., 19 U.S.C. § 1583; 19 C.F.R. § 145.3(b)-(c)); see also Yule Kim, Cong. Research Serv. RL34404, Border Searches of Laptop Computers and Other Electronic Storage Devices, 13-14 (2009) (describing recent legislati