Two of the biggest stories in the past couple of months have been about travel and immigration. First, with the fall of Afghanistan, we have opened our borders to refugees escaping the tyranny of the Taliban. And then just last week, President Biden placed travel restrictions on eight African nations. What is interesting is that both occurrences, an opening and a closing, have drawn the most criticism from the right while the praise came from the left. As most readers of this column know, immigration and travel restrictions are not in any way new and, historically speaking, we have been having similar debates for more than a hundred years.