Weak respiratory muscles may suddenly fatigue, producing precipitous respiratory collapse. Elective intubation is preferable to emergency intubation or respiratory arrest. The standard 20/30 rule (FVC less than 20 ml/kg or NIF less than 30 cmH20) are the best indicators of the need for ventilator support.
Imminent lawless action is a term used in the United States Supreme Court case Brandenburg v. Ohio (1969) to define the limits of constitutionally protected speech. The decision overturned the decision of the earlier Schenck v. United States (1919), which had established clear and present danger as the constitutional limit for speech.
The constitutionality of anti-miscegenation laws was upheld by the U.S. Supreme Court in the 1883 case Pace v. Alabama (106 U.S. 583). The Supreme Court ruled that the Alabama anti-miscegenation statute did not violate the Fourteenth Amendment to the United States Constitution.