Four of the largest U.S. banks just scraped by in an annual Federal Reserve check-up on the industry’s health, underscoring their top regulator’s enduring doubts about Wall Street’s resilience more than six years after the crisis. Goldman Sachs Group Inc (GS.N), Morgan Stanley (MS.N) and JPMorgan Chase & Co (JPM.N), all with large and risky trading operations, lowered their ambitions for dividends and share buybacks, the Fed said on Wednesday, to keep them robust enough to withstand a hypothetical financial crisis.