According to YAHOO! Finance, Warren Buffett had this to say in his annual letter to Berkshire shareholders, on the heels of acquiring railroad Burlington Northern Santa Fe:  “Our elephant gun has been reloaded, and my trigger finger is itchy.”  He acquired Burlington for $44 billion just over a year ago, and had $38 billion in cash at the end of 2010. Noting that there is an abundance of opportunities in the U.S. for earning money, he wrote, “A housing recovery will probably begin within a year or so.  In any event, it is certain to occur at some point.”  Berkshire owns four housing-related businesses including Johns Manville, and Acme, the leading brick producer in Alabama.  Jeff Matthews, author of a book about Buffett, says, “Buffett doesn’t spend money unless he thinks he’s going to make money,” and finds it interesting that he may be turning his (hunting) sights to the U.S. housing market.  Click here to see the video article from Yahoo! Finance.