I took a course in Peace and War one time. One of the things the instructor talked about was how a country’s security depends on the prosperity of its neighbors. Helping our neighbors (on the other side of the border) have what they need to prosper makes it less likely for them to want to invade our country, or seek asylum in it. In other words, according to my instructor, it’s not walls that create safety – it’s caring for each other and “Good will to all…”
“Peace on earth; good will to all.” – Luke 2:14