Domestic trade is easy because we trade with people using the same currency, the same language, the same basic education, the same shared history, the same culture, the same government, the same rules, etc. In international trade we are not only trading goods, we also trade values and culture. Politicians (sometimes supported by entrepreneurs with dishonest and selfish interests) create artificial barriers to stop this influx by imposing immigration policies, tariffs, fees and a lot of useless regulations to preserve jobs and “national security”. But by doing this, they are keeping down the freedom everyone has trading with our neighbor. Eventually, the consequences will be payed. Every control we made on trade, is a threat to our freedom. As the speed on which goods are traded is faster than the speed of how people move in reaction to the changes on the economic estructure (as result of international trade), it is clear why some people are angry about global commerce.