Marbury vs Madison

Before the Marbury vs Madison case only Federalists could be part of the Judiciary branch. When John Adams ended his presidency Thomas Jefferson took office and changed the law so that anti-Federalists could also join the Judiciary branch, and anti-Federalist John Marshall became the new Chief Justice. William Marbury who John Adams had appointed to be the next chief justice in his last day in office sued vice president James Madison, but lost the lawsuit.
If this case had never happened Federalists would still be the only people who could join the Judicial branch, would a less fair place.


WILLIAM MARBURY v. JAMES MADISON, SECRETARY OF STATE OF THE UNITED STATES.
http://www.law.umkc.edu/faculty/projects/ftrials/conlaw/marbury.html