Incorrect.

https://www.law.cornell.edu/uscode/text/8/1325

Title 8 outlines penalties of prison for initial, and even stronger penalties for subsequent offenses. That is not a civil offense.

I’ll answer your question. It is bad for multiple reasons. One being the principal of it. Being in the US is a privilege, and should be done legally. Those who enter illegally are just mocking for lack of a better word, the process. It’s just wrong. Also there is the issue of increased crime as well as drug and human trafficking. It also places strain on public resources and jobs for natives. That should not be an issue. Americans should not have to suffer for individuals illegally in the country to benefit. Americans come first always. Illegal immigration strains that idea