The refugee crisis is at the center of Europe’s political war. Some European countries are building walls to exclude people seeking refuge from the deadly conflicts in the Middle East, while others — notably Greece, Germany, and the Nordics — are working to reinforce EU values of openness and tolerance. The United States should do more to promote these values by increasing its support for relief efforts and opening its doors to refugees from the Middle East. European governments this year are contributing four times more money than the United States to the financially strapped United Nations High Commissioner for Refugees. Meanwhile, the United States will resettle a minuscule 10,000 Syrian refugees, compared with more than 500,000 in Germany.