Olympus Corp. v. United States

holding that limiting instruction in “tools of the trade” case properly protected the defendants from undue prejudice | holding that the CIT does not have exclusive jurisdiction under § 1581(i)(3) to hear a challenge to Customs Service regulations permitting parallel importation of “gray market” goods | noting that an accused’s possession of a weapon or implement “suitable to the commission of the crime charged ... is always a proper ingredient of the case for the prosecution” | government informant testifies that co-conspirator told him that defendant was an agent for marijuana buyers and a member of the conspiracy | “evasive movements are part of the performance of the crime” | guns are tools of trade for international drug smuggling | invalidating post-accident drug testing of railroad employees | post-accident testing of railroad workers | post-accident testing of railroad workers