I will never understand why the people who are most concerned with illegal immigrants don’t go after the businesses exploiting them instead of chasing after desperate poor people. Literally not a peep about it and it could be solved at the Federal level. If they are not employable most of them won’t come!
Because politics and money. Let's say the Department of Justice went after a bunch of tomato growers. Word is going to get around among the tomato growers, the companies that buy from them, the companies that distribute them, that these certain politicians are not to receive any campaign contributions. They will hire a lobbyist and go after them. So the politicians do not pressure the department of justice, and the administration does not make it a priority for the department of justice, or any of the organs of government. That's putting aside the cultural, racial, and the American political divide.
So how do candidates get by with promising tougher border controls, if that would end up cutting off the supply of cheap workers that these other businesses rely on?
Perhaps they promise it and then don't do it?
Or make a lot of talk about a big physical, obvious and newsworthy solution like “the wall”.
If you solve a problem you can't campaign on it in the next election, especially if that solution causes a bunch of other problems.