I am a US citizen and I feel unwelcome and uncomfortable when I interact with border guards. I know you all have it worse and I have rights that you do not, but I just want to let you know that it is a systemic problem not limited to immigrants. It's rooted, I think, in the power-trippy "respect my authority" culture that has permeated all American law enforcement.
A US citizen cannot be denied entry. Your stuff can be, you can be stripped naked and cavity searched, ruthlessly interrogated, humiliated, temporarily detained, and generally treated without even a hint of human dignity. But they can't keep you from entering the country, eventually. This has been established by supreme court precedent.
