president bill clinton. he asked something i hadn't heard before. you'll hear that in just a moment. first roll the question you know we had to ask. >> is mrs. clinton running for president? >> i don't know. >> oh, the nonanswer answer. no surprise there, mr. president. but now i want you to take a look at what happens when juan carlos asks a question the president was clearly not expecting. >> what kind of president do you think vice president joe biden would make if he runs and he wins? >> well, if he runs and he's the nominee i'll try to help him win. i think the world of him. i've known him for years and years and i have a very high opinion of him. i care a great deal about him and i think he's done a great job for the president and for the country. >> in case you missed it today if joe biden runs and if joe biden is the nominee he can count on the support of his good friend president clinton. i know a lot of qualifiers, ifs,