In the case, U$.$S$.$ Supreme Court Chief Justice John Marshall wrote for the majority: $"($I$)$f a law be in opposition to the constitution; if both the law and the constitution apply to a particular case, so that the court must either decide that case $($conforms$)$ to the law, disregarding the constitution; or $($conforms$)$ to the constitution, disregarding the law; the court must determine which of these conflicting rules govern the case. This is of the essence of judicial duty."

Marbury v$.$ Madison

Gideon v Wainwright

Plessy v$.$ Ferguson

McCulloch v Maryland