By Professor Timothy O'Donnell, Corpus Christi for Unity and Peace Team - Catholic tradition, from the Catechism to Popes Pius XII, John Paul II, and Benedict XVI, has always taught both the duty to welcome migrants and the equal duty of nations to regulate their borders for the sake of the common good; open-border ideology is therefore contradicts, rather than fulfills, authentic Church teaching. The uncontrolled influx of millions of illegal immigrants in recent years has produced grave evils: 400,000+ unaccompanied minors lost in the system, record fentanyl deaths, surging human trafficking and sexual exploitation, violent crime by criminal aliens, and massive welfare strain on American citizens—harms that ordered charity seeks to prevent, not enable.