with its attendant safeguards, is improper." Id. at 1531 (emphasis added) (citations omitted). See also SME Racks. Inc. v. Sistemas Mecanicos Para, Electroncia, S.A., 243 Fed. Appx. 502, 504 (11th Cir. 2007) (affirming district court's refusal to grant a preliminary injunction freezing defendant's assets).