No matter how the U.S. Supreme Court rules in the three consolidated immigration cases heard Tuesday, the fact that the Deferred Action For Childhood Arrivals (DACA) program came down to an up or down vote of six men and three women is itself a lesson in how Washington works — which is to say, not well. Only the most anti-immigrant extremist believes the 700,000 or so individuals eligible for the DACA program — straight-arrow young people with no criminal record, a high school degree and, in some cases, a record of U.S. military service — should be expelled from this country, the only home many of them have ever known. It’s ludicrous. It’s preposterous. It’s ridiculous. And yet here we are at a place that could easily have been avoided.