1. Temporal order - the cause must precede the effect. 2. Correlation/Relationship - a predictable relationship exists between the two events. For example, an increase/decrease of one event should consistently result in an increase/decrease of the other event. 3. The elimination of plausible alternative explanations - all other possible causes of an event must be eliminated, leaving only the event that you allege to be the cause. A more thorough discuss of these rules is available on the attachment. Using this set of causal rules and any independent material necessary, identify the most likely cause of the increase of migration along the Southern U.S. Border. In your essay make an argument in support of what you believe to be the primary cause of this increased migration. The structure of your response should follow the three causal rules provided herein