NBC's Brian Williams mentioned Biden's free-speaking reputation and asked the candidate whether he would have the self-discipline as president to refrain from saying too much.

CNN: Biden is experienced and, sometimes, too frank

The big anchors ABC's Charlie Gibson, CBS' Katie Couric and NBC's Brian Williams were down in Louisiana instead of Minnesota.

NPR: Stormy Weather Might Just Help This GOP Ticket

Speaking to NBC's Brian Williams, Mr Cook noted that key components in Apple products such as the iPhone were already manufactured in the US, but were then shipped out to be assembled.

BBC: Tim Cook