After Ahmed Mohamed was detained by police for bringing a homemade clock to his Texas high school because school officials thought it looked like a bomb, President Obama invited the tinkering Muslim teen to bring it to the White House. “Cool clock, Ahmed,” Obama wrote on Twitter. “Want to bring it to the White House? We should inspire more kids like you to like science. It’s what makes America great.” Despite the ninth-grader’s repeated insistence that the device was not a bomb, Ahmed was handcuffed and driven to a juvenile detention center, and police considered pressing charges against him over...