<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
I can't make sense of why President Trump wanted a border wall between USA and Mexico. Was it really needed?
<|assistant|>
President Trump reportedly believed that a wall would stem the flow of illegal immigration into the United States. This policy was one of the central platforms of his presidential campaign, and he argued that the construction of a border wall would be an effective way of protecting U.S. national security. Despite widespread opposition from lawmakers on both sides of the aisle, Trump was successfully able to convince Congress to allocate billions of dollars in funding for the construction of a wall along the U.S.-Mexico border. As it stands, however, experts are generally in agreement that the wall has had limited impact on the number of illegal crossings, suggesting that other policy measures and deterrence efforts would have been more effective.