The judiciary is the one that has the authority to declare the initiative as unconstitutional.
An initiative is considered unconstitutional when the judiciary considers it contrary to the concepts adopted by the federal and state constitutions.
In that case, the judiciary must prevent controversial attitudes to the laws of a country from being exercised, in order to guarantee the security of the people. This function of the judiciary must be supervised by the legislative branch, which makes the laws present in the federal or state constitution, and by the executive branch, which certifies compliance with these laws.
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