Investors have pumped cash into U.S. money market funds for a fifth straight week, the latest sign of strong demand ahead of a potential interest rate cut by the Federal Reserve. About $37 billion flowed into U.S. money market funds in the week to September 4, bringing recent inflows to about $165 billion, according to data from the Investment Company Institute. Total assets rose to a record $6.30 trillion from $6.26 trillion the previous week. Despite strong demand, concerns about once the U.S....