Reporter's Note: The White House often seems twitchy about the subject of Vice President Joe Biden, especially since he rather famously strays from the talking points now and then. But in today’s letter, I note the Veep may have a few lessons from which the president could learn a thing or two. Dear Mr. President, I noticed Joe Biden was off doing a little Christmas shopping at a new Costco here in D.C., and I must say it was entertaining. I know that you fancy yourself a great communicator, but let me tell you Biden is just a natural when it comes to connecting with folks one on one. There he was slapping other shoppers on the back, tasting the free samples, scrutinizing prices; looked totally like a local city council member picking up supplies for a tailgate party.