I've personally been verbally reprimanded that I would not be allowed to enter the united states, by a sworn CBP officer, while at the border with a valid US pa

I've personally been verbally reprimanded that I would not be allowed to enter the united states, by a sworn CBP officer, while at the border with a valid US passport in my name. Yes I was eventually allowed in, but CBP officers genuinely thought they could keep a US citizen out of the country. I'm sure there have been citizens denied. Keep in mind CBP is something like the lowest ranked federal LEO agency to work for.