Which amendment requires that all warrants be supported by probable cause?

The 4th Amendment to the United States Constitution is the correct answer because it explicitly protects citizens from unreasonable searches and seizures. This amendment requires that any warrant issued must be supported by probable cause, allowing law enforcement to demonstrate that there is a legitimate reason to believe that a crime has been committed or that evidence of a crime can be found at a particular location. The intention behind this requirement is to safeguard individuals’ rights to privacy and security against arbitrary governmental actions.

The other amendments listed address different legal rights and protections. The 5th Amendment relates to rights in criminal cases, including protection against self-incrimination and double jeopardy. The 6th Amendment guarantees the rights of criminal defendants, including the right to a fair trial and legal representation. The 8th Amendment prohibits excessive bail and cruel and unusual punishment. Understanding the specific focus of each amendment is crucial in recognizing why the 4th Amendment is the one that establishes the necessity for probable cause in warrants.