No right to counsel at police lineups prior to the time the suspect is formally charged with a crime.
A police lineup after the accused has been formally charged with a crime is considered "a critical stage of the proceeding" so the accused has a righ to counsel.
Police lineups that are fraught with dangers of suggesstion are invalid becuase they violate the accused right to counsel.
Replaces Frye, Federal cases not allow the expert testimony pertaining to scientific, technical, or other specialized knowledge that will assist the judge or jury in understanding the evidence or in determining the fact at issue.
4 ways to decide is the right to a speedy trail has been vioated
Even though juveniles proceedings are not criminal, they are entitled to a court-appointed counsel if the proceedings can lead to commitment and an institutional in which the juvenile's freedom is limited.
2 part test to determine double jeopardy
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