The Supreme Court on Wednesday is taking up challenges by commercial fishermen to a fee requirement that could achieve a long-sought goal of business and conservative interests: limiting a wide swath of government regulations. Billions of dollars are potentially at stake in front of a court that, like the rest of the federal judiciary, was remade during Donald Trump’s presidency by conservative interests that were motivated as much by weakening the regulatory state as social issues including abortion. Lawyers for the fishermen are asking the justices to overturn a 40-year-old decision that is among the most frequently cited high court...