Jeb Bush gave an impassioned endorsement of fellow Floridian Marco Rubio, advising Mitt Romney to pick him as his running mate and describing him as “the most articulate conservative elected official on the scene today,” and even spoke of the “great pride” he has for the U.S. senator from his home state. “Marco Rubio is my favorite [choice], because we have a close relationship,” the former Florida governor told Charlie Rose in an interview that aired on his PBS show Thursday evening. “I admire him greatly … He speaks with great passion about American exceptionalism. I think he would lift...