Can refugees cross the American border?

Can refugees cross the American border? First of all, the border of the United States is very long, with coastline and land line. I don't know which section the subject is asking. If not, where are the illegal immigrants? In any case, illegal immigrants exist, that is to say, there must be people who want to immigrate but can't immigrate through legal channels and cross the US border to become illegal immigrants.

To some extent, the United States welcomes legal immigrants. For example, the United States welcomes its younger brother Canada, and the border between the two countries is not very fortified. However, for illegal immigrants, this is not a good thing for the United States. As neighbors of the United States, Canada and Mexico are far apart. There are many reasons to say here, only a little.

For Mexico, some people in the United States think that Mexican workers have taken the jobs of white blue-collar workers in the United States, or reduced their wages, showing strong dissatisfaction. Trump's ruling ability also responded to the people. I have to say that it is no accident that Trump can take office. He also reflects the problems of some Americans to some extent. Mexico is a relatively cheap labor force for the American labor market.

Although the current fortification level of the United States on the Mexican border is much higher than before, it must be said that there is no windtight wall in the world. In other words, the United States did not accept refugees. Although there are few legal refugees in the United States, it is not without them. Therefore, there must be someone who can cross the American border through legal channels.