ICE and CBP are targeting legal residents and even U.S. citizens, and attempting to deport them, if they are Hispanic. See for example:

https://www.gq.com/story/border-patrol-incarcerated-citizen

ICE and CBP have repeatedly violated U.S. law in their treatment of children, including violating the Flores Settlement (which carries the force of U.S. law), violating Constitutional due process and equal protection rights (ruled in Ms. L case), and violated the civil rights guaranteed under U.S. and international law, for example by refusing to provide hygiene materials and medicine.

If you are unable to see how recent rhetoric around immigrants fits historical patterns, I'm not sure how I can help you. Also, you talk about "the rules" as if they had nothing to do with America's history of racism, but historically it's pretty clear they do.

It is true that plenty of non-white people come legally to the US. But that doesn't mean that there aren't problems with how those people are treated, or that there isn't bias against those people involved.