U.S. President Barack Obama steps in to prevent a small robot from falling off a table during a demonstration of robotics at Miami Central Senior High School March 4, 2011. Obama visited the school with former Florida Governor Jeb Bush and Education Secretary Arne Duncan for an event on the future of education funding. U.S. President Barack Obama holds a lazer-etched name plate made for him by students at Miami Central Senior High School March 4, 2011. Obama visited the school with former Florida Governor Jeb Bush and Education Secretary Arne Duncan for an event on the future of education...