Generally speaking, in the US, the local or state prosecutor decides if an alleged attacker will be charged with a crime. If there is enough evidence, in the mind of a prosecutor, then legal proceedings will begin. In some cases, however, the prosecutor will have a Grand Jury decide to either follow the prosecutor's recommendation, or not to.
the umpire decides if the batsman is out or not
decides whether a media piece is meaningful or not.
the supreme court decides
In a civil case, the jury decides whether the defendant is liable or not liable for the alleged harm or wrongdoing. In a criminal case, the jury decides whether the defendant is guilty or not guilty of committing a crime. The standard of proof is higher in a criminal case (beyond a reasonable doubt) compared to a civil case (preponderance of the evidence).
No. Felony crimes are prosecuted by the state, who has the final word on whether, and to what extent, they are prosecuted.
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The Judicial Branch decides whether or not a law is unconstitutional.
The Senate reviews laws and decides whether they are within the guidelines of the Constitution.
Whether impeachments are proven or not proven is what decides the outcome of an impeachment.
The American Judicial System, part of the Senate decides which laws are constitutional.
The shape of the follicle
my mom