This document summarizes the key events and outcomes of the landmark 1803 Supreme Court case Marbury v. Madison. It describes how the Judiciary Act of 1801 created 16 new Federalist judgeships, angering Jeffersonians. William Marbury sued James Madison for failing to deliver his judicial commission. Chief Justice John Marshall dismissed the case but established the power of judicial review, allowing courts to declare laws unconstitutional, and defining the Supreme Court's authority over Congress and the executive branch.