We hear a lot about the United States' Judeo-Christian heritage, but according to President Obama, "Islam has been woven into the fabric of our country since its founding." That's what the president told a White House conference on "countering violent extremism" on Wednesday. Obama has said similar things in the past: "I also know that Islam has always been a part of America’s story,” Obama said in a June 2009 speech in Cairo, Egypt. "Islam has always been part of America," he said in a 2010 statement marking the start of Ramadan. And in a 2014 statement marking Eid, Obama...