Berkshire Hathaway CEO Greg Abel, a longtime Iowa resident, has become a U.S. citizen, joining a naturalization ceremony hosted by the Iowa Cubs. This event marks a significant personal milestone for Abel, who was born in Edmonton, Canada, in 1962. Abel, with an estimated net worth of around $1 billion and a company valued at over $1 trillion, has maintained a low profile in public life, even as he threw out the ceremonial first pitch at the baseball game. The naturalization ceremony, the 18th annual, saw 533 new citizens sworn in, with Abel among them. This development raises questions about Berkshire's potential inclusion in the Dow Jones Industrial Average (DJIA), an index that has historically excluded Berkshire due to its high stock price and Warren Buffett's aversion to stock splits. However, recent changes in the index's composition and the market's dynamics may make it the right time for Berkshire to join the Dow 30, despite its high stock price and market cap.