What must be proven to obtain an arrest warrant based on "Information"?

To obtain an arrest warrant based on "Information," the requirement is to establish probable cause, but it's important to understand the context of the source of that probable cause. In this case, the correct answer revolves around the involvement of a U.S. Attorney, typically acting as a representative of the government to present the cases for warrants.

Probable cause involves demonstrating that there is a reasonable belief that a person has committed a crime. The information provided to a judicial officer (usually through an affidavit from law enforcement or a U.S. Attorney) needs to exhibit sufficient facts that would lead a reasonably prudent person to believe that an offense has occurred.

The involvement of the U.S. Attorney significantly implies that the judicial process is being followed adequately, as they will assert that the facts presented meet the legal standards of probable cause. The prosecutor's participation ensures that the information submitted is in compliance with legal norms and that the arrest warrant is issued based on substantial grounds.

In contrast, reasonable suspicion is a lower standard than probable cause and is typically used for stops or searches rather than for obtaining arrest warrants. Additionally, while a Grand Jury can involve probable cause determinations for indictments, in this context, it is not the typical or required mechanism for obtaining an arrest warrant based