In this case, the Supreme Court will consider whether the United States must prove elements of a crime not contained in the relevant criminal statute but included in an erroneous jury instruction if the government failed to object to that instruction at trial. The Court will also consider whether an appellate court may review a statute-of-limitations defense not raised at trial. See Brief for Petitioner, Michael Musacchio at i; Brief for Respondent, United States at i. Michael Musacchio was convicted of conspiracy to access a computer system without authorization. According to the relevant statute, the United States had to demonstrate “Mussachio had agreed to make unauthorized access or exceed authorized access” of a computer system. See United States v. Musacchio, 590 Fed. Appx. 360, 362 (5th Cir. 2014). However, the trial court’s jury instructions stated that the jury must find that Musacchio “intentionally access[ed] a protected computer without authorization and exceed[ed] authorized access.” (emphasis added) See id. at 361. Neither Musacchio nor the United States objected to the instruction. On appeal, Musacchio challenged the sufficiency of the government’s evidence. Musacchio contends that the law-of-the-case doctrine requires the United States to prove the elements of the crime as described in the jury instructions, even when the jury instructions were erroneous and imposed a heightened burden on the government. See Brief for Petitioner, Michael Musacchio, at 19–22. Musacchio also argues that a statue-of-limitations defense not raised at trial is reviewable on appeal. See id. at 37–39; 53. The United States contends that the law-of-the-case doctrine is inapplicable, because the jury instructions were patently erroneous, and the proper statutory elements were stated in the indictment. See Brief for Respondent, United States at 13. The United States further argues that Musacchio waived his statute-of-limitations defense by failing to raise it at trial. See id. at 40–41. The Court’s decision in this case may affect the government’s prosecutorial power, the fairness of trials, and the availability of statute of limitations defenses. See Brief for Petitioner at 19-20; Brief for Respondent at 13, 48-51.