These two paragraphs sum up all my arguments for open borders.

Scripture teaches open borders. The Constitution doesn’t give congress the power to regulate immigration–only naturalization. The founding fathers listed immigration restrictions as one of the reasons for secession in the Declaration of Independence.

It’s not a sin to hire a foreigner or cross a border, and it shouldn’t be illegal (Romans 13:3-4). Conservatives have been duped into espousing big-government, central-control of labor markets. All socialist countries have closed borders. The USA had open borders until the 1920s and lead to unprecedented economic growth.