For a crime to be committed, the prosecutor must be able to prove a criminal intent and an overt act to carry out that intent. Jack and Mary agreed to rob a series of banks. Prior to beginning their bank robbery spree, they were arrested and charged with criminal conspiracy. What act did Jack and Mary do that justifies a finding that they committed a crime

What act did Jack and Mary do that justifies a finding that they committed a crime?

The crimes they committed were the Intention and overt act to commit the crime.

Explanation:

From the question it can be inferred that a prosecutor must be able to prove a  criminal intent and an overt act to commit the crime before the alleged criminals will be found guilty as charged in the alleged crime.

the fourth amendment protects:

"the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."  

so this would mean the denial to search and seizure without warrant or permission.