"Our country was captivated by an amazing story on the basketball court," the president told reporters gathered on the tarmac, his arm draped around the 17-year-old senior, with Air Force One, the presidential jet, in the background. "It's the story of a young man who found his touch on the basketball court, which in turn touched the hearts of citizens all around the country." The president joked that if his aging body would let him return to the basketball court, he'd want a lesson from McElwain. Because of his autism, McElwain didn't begin talking until he was 5 and still...