Commentary Upon my return to the United States from Europe, I was reminded of Ronald Reagan’s insight that, “The trouble with our liberal friends is not that they’re ignorant. It’s just that they know so much that isn’t so.” Every liberal critic “knows” President Donald Trump was too lax and too late in his response to the COVID-19 pandemic. They know the Trump administration made-up its anti-COVID campaign as it went along, including its response to international travel during the pandemic. Every critic also “knows” that, in striking contrast, the Biden administration meticulously follows the science. It uses joined-up thinking to plug all of the public health holes it inherited from its hapless predecessor. Everyone knows that, to-date President Joe Biden’s War on COVID has been decisive, universal, and airtight in its application. But every liberal critic is wrong—at least when it comes to Americans returning home via domestic airports. …