A person can call the U.S. Immigration and Customs Enforcement if they believe that someone they know is in the country illegally. However, direct evidence must be provided to support these claims.
The ICE may act on the tip immediately depending on the resources they have and the number of similar ongoing cases. The ICE will investigate the case and, if deemed appropriate, order its agent to arrest the person. The person will be asked to appear in the Immigration Court on a certain date, and they can ask for a full court hearing. It costs the government approximately $12,500 to deport one person.