(Bloomberg) -- Senate Banking Committee Chair Sherrod Brown is urging the Federal Reserve to strengthen its policies on financial market trading by Fed officials, after a watchdog report last month revealed new details about trading by policymakers during the pandemic.Most Read from BloombergCapital One to Buy Discover for $35 Billion in Year's Biggest Deal Largest Covid Vaccine Study Yet Finds Links to Health ConditionsYour 401(k) Will Be Gone Within a DecadeStocks Fall Before Nvidia’s Make-or-