Have you ever consider what walls are for?
Consider the Berlin Wall. It was built when the Soviets figured out that those in East Berlin were migrating to West Berlin. It is sort of the way the Soviets ran things. They went to a great deal of effort and expense to keep people in. I assure you, that wall was not there to keep the West Berliners out.
The Israelites put a wall up for physical protection. Guess what? It worked. Since they put the wall up, the killing has drastically been reduced. Sounds like a good reason for a wall to me.
For some time the national border between the US and Mexico was a joke. People went back and forth across it routinely. By the way, the drugs found their way across the border too.
Since President Trump started building the wall, the traffic has been drastically reduced. By the way, the drug traffic has been reduced too. If for no other reason, that sounds like a good reason for the wall.
Now the question is, does it keep people in the country? Of course not. All those with the desire to leave this country can easily leave, assuming that they can find a country that will take them. Until a while ago, that wasn’t a problem. Even those lacking cars could walk into Mexico. From what I understand, it might be a little more difficult now.
Nonetheless, even a child can tell that the real reason for the wall is to keep people out. You see, the hope is to get within the US. No one really wants to go to Mexico, at least not for long.
I may be wrong but I think it was Winston Churchill who said something like,
Capitalist countries build walls to keep people out.
Communist countries build walls to keep people in.
I find it just a little ironic that the wall on the Mexican border sort of does both. It keeps the people in the socialist country of Mexico while it keeps people out of the Capitalist country of the United States.
If the socialists have their way, the wall will not be needed. It will be just as bad, or worse, north of border as the south. Conceivably, people might prefer the warmer climate of Mexico.