Very good. People came here and worked in the US because US businesses did not follow the employment/immigration laws. It is not hard to blame the people who came here especially after all the damage the US did with its wars in Central America (supporting oppressive dictators) and in destroying much of the Mexican corn crop and economy with NAFTA. I think the business community and those who would subvert the US wanted cheaper labor to undermine unions, workers rights. They also outsourced and closed so many US factories. A person without papers was the ideal employee - could be undercut on wages and had few legal rights and lived in fear.
We can and need to legalize these people through due process of law. Instead of the round ups - we could have gone into all of these workplaces and issued temporary work permits pending hearings. We need to treat all people (US citizens and others - with dignity and respect). Going forward, the employers should be the ones under legal sanction. If they violate the law - they should go to jail. We definitely do not need a border wall. The things we are doing are not the signs of a great country with respect for law and human rights. We need to get on the right track!!!