allowed slavery for decades And doesn't anymore. only allowed a minority of citizens to vote for most of its history And now does. These are both examples o

allowed slavery for decades And doesn't anymore. only allowed a minority of citizens to vote for most of its history And now does. These are both examples of how the US has improved over time. I would be very surprised to see a reversal on either of these. If there were, people would similarly question whether it was still the US in anything but name, even if this had been the situation in the past.