June 29, 1992 - Angers conservatives by coauthoring, with Justices O'Connor and Souter, the opinion of the court in Planned Parenthood v. Casey, to uphold Roe v. Wade.
March 1, 2005 - Writes the majority opinion for the 5-4 ruling in Roper v. Simmons stating that executing killers who were under age 18 when they committed their crimes is unconstitutional.
April 18, 2007 - Voting with the conservatives in the 5-4 decision in Gonzales v. Carhart, Justice Kennedy writes the majority opinion to uphold the nationwide ban on partial birth abortions.
June 12, 2008 - In Boumediene v. Bush, he writes the majority 5-4 opinion, assessing that the language of the Constitution grants the Guantanamo Bay prison detainees the right to seek habeas corpus.
June 25, 2008 - Writes in Kennedy v. Louisiana the majority opinion, 5-4, overturning the state's death penalty statute for child rape when death was not a circumstance of the case.
June 25, 2012 - In overturning three sections of Arizona's 2010 immigration law, the opinion of the court, in Arizona v. United States, is written by Justice Kennedy.