During Trump's campaign, in 2016, he promised he would have built this "big and beautiful wall" between Mexico and Us. But now a lot of people from all over the country are rebelling against the president and all his staff, who are using illegal ways and too much money.
I think there are two different points of view to talk about this fact. A lot of people voted Donald Trump so that he could rule the country. Before the election they all knew his plans. He's just keeping the word. Even if his big project is ethically unfair, those who elected him are behaving in a contradictory manner also if their reaction is right and justifiable. Maybe they also reacted like this cause they believed that they don't have to pay.
It's necessary to say that this project is horrible, almost impossible to realize and unprecedented. I also think that the problems of immigration and drug dealing can't be solved and this is not the best way to control these ones, in fact there are many statistics which can confirm this, for example an expensive money investment could weigh on the society or problems regarding businesses. Anyway I think that they could legalize the arrivals stipulating diplomatic agreements with the countries of origin, first of all they have to open again regular admittances for immigrants in order to not proceed trough illegal ways, they could increase integration dynamics so that it's possible to reduce the feeling of insecurity and xenophobia and they would administer the welcome better.
Finally I would like to add that they should learn the concepts of "humanitas" and "philantropia" of the ancient Romans, i.e. the solidarity and feeling part of the human condition and indicates a sense of civilization. For this reason I think that we can end these problems with a single weapon, the culture.