United States v. Russell, 411 U.S. 423 (1973), is a Supreme Court case dealing with the entrapment defense. The court split 5-4 and maintained the subjective theory that had first been adopted in Sorrells v. United States, 287 U.S. 435 (1932). Although an undercover federal agent had helped procure a key ingredient for an illegal methamphetamine manufacturing operation, and assisted in the process, the Court followed its earlier rulings on the subject and found that the defendant had a predisposition to make and sell illegal drugs whether he worked with the government or not.