https://www.reuters.com/article/us-qualcomm-m-a-broadcom-fees/trump-makes-investment-banking-fees-uncertain-again-idUSKCN1GP2T8 >President Donald Trump's dramatic intervention in Singapore-based Broadcom Ltd's $117 billion hostile bid for U.S. semiconductor peer Qualcomm Inc is the latest reminder to investment bankers not to take lucrative fees on transformative mergers for granted under his administration.