Part of me wonders if all the worry over what would happen if a large number of immigrants were allowed in from countries south of us is unfounded. The last time we had a large influx of immigrants in an uncontrolled fashion and allowed them to become citizens and integrated them into society was a little over 40 years ago when the Mariel boatlift happened. Practically overnight Miami and south florida were changed forever. Forty years later the city is a hub of international business focused on trade with all of Latin America. No one would have predicted that when we decided to let any Cuban that came here become citizens. But they settled in and pursued the American dream and made it their own.