(Commentary by Nicholas Sargen, lecturer at the Darden School of Business) Since the November elections, investors have been focused on President-elect Biden’s efforts to bolster the U.S. economy, including the latest $1.9 trillion plan. But investors should not lose sight of potential regulatory changes that could unwind much of the deregulation that occurred in the Trump era. Three areas – the environment, health care and tech giants – are among those likely to be most affected.