What must the government establish when using a confidential informant?

The government must establish the informant's credibility when using a confidential informant. This is essential because a credible informant increases the reliability of the information provided to law enforcement, which can impact the justification for searches, arrests, and other actions taken based on that information. Establishing credibility involves demonstrating that the informant has previously provided accurate information that has led to successful investigations or that they have firsthand knowledge of criminal activity. Without demonstrating this credibility, any evidence derived from the informant's information may be challenged and could lead to Fourth Amendment violations, questioning the reasonableness of searches and seizures.

Other factors, such as an informant's anonymity or financial status, while important in certain contexts, do not directly relate to the evidentiary strength required for the government to justify actions based on the informant's information. Moreover, the relationship with police can impact the informant's motivations but does not inherently establish the reliability of the information provided.