First, because it is common sense that it is wrong. Second, that everyone knows better than to have slaves because of what it did to America. If slavery was to happen again, America will be at war with itself and we cannot afford to have a war like that. It makes America look bad and it can hurt relations with foreign powers against slavery. It could also start a war with a foreign power if they decide that they don’t like our actions. America cannot spend all the money on another war and a lot of soldiers would probably not fight with us if they did not agree with the government on