Trump inspected the California border wall project. What is the function of the border wall?

The border wall is to better prevent people from crossing the border, and also to prevent smuggling and transporting drugs and guns. It not only protects the national territory from infringement, but also guards our security.

In fact, the border wall built by the United States is not the first in the world, and two other countries in the world have already built such a border wall. The first is Russia, which has built dozens of kilometers of barbed wire along the border between Crimea and Ukraine, effectively protecting its territory.

The border wall in the United States is different from the above situation, in order to prevent citizens of other countries from sneaking into the United States from Mexico for illegal immigration. Since the "9 1 1" incident, the immigration examination in the United States has been very high, which makes it difficult for many people who want to settle in the United States. So they illegally smuggled from Mexico to the United States. The border between the United States and Mexico is 1000 kilometers long. It is actually very simple to enter the United States from any corner of this more than 1000 kilometers.

The purpose of repairing the wall is also very clear, that is, to keep illegal immigrants out of the United States. Because of the strength and wealth of the United States, Mexicans and some people from Central American countries often cross the US-Mexico border and illegally enter the United States.

After these people arrived in the United States, they not only seized American jobs and shared American welfare, but also brought drugs and guns into the United States, which triggered American turmoil. Trump's supporters are mostly lower-class whites and are particularly sensitive to these things. So Trump repaired the wall to please these voters.

In addition to putting an end to illegal immigrants, that is to put an end to illegal entry and exit items such as drugs and weapons. On the other hand, since Trump took office, he has expelled a number of illegal intruders from Arab countries and other countries. In order to prevent these people with regional characteristics from posing a threat to the United States, Trump made this decision.