Al-Khafaji v. United States

How later courts describe this case

• investigator of drug distribution in a federal hospital had discretion to select, use, and control an informant
• "Decision making as to investigation and enforcement, particularly when there are different types of enforcement action available, are discretionary judgments." (quoting Bernitsky v. United States, 620 F.2d 948, 955 (3d Cir.1980
• decision whether to use informant to conduct a drug investigation in YA hospital and extent of control to maintain over informant were discretionary functions immune from liability under FTCA
• federal officials do not possess discretion to violate constitutional rights or federal statutes