Highlights from billionaire Warren Buffett's annual letter to Berkshire Hathaway Inc shareholders on Saturday:
ON IMMIGRATION
"One word sums up our country's achievements: miraculous. From a standing start 240 years ago - a span of time less than triple my days on earth - Americans have combined human ingenuity, a market system, a tide of talented and ambitious immigrants, and the rule of law to deliver abundance beyond any dreams of our forefathers. You need not be an economist to understand how well our system has worked. Just look around you. See the 75 million owner-occupied homes, the bountiful farmland, the 260