By Nichola Saminather TORONTO, June 9 (Reuters) - Canadian Imperial Bank of Commerce CM.TOon Thursday said it will expand its U.S. energy investment banking team and announced an increase in wages from July for the majority of its merit-eligible employees, according to separate internal memos seen by Reuters. Yeh, a climate investor and a senior advisor in President Barack Obama's administration, will be based in CIBC's new San Francisco office. The expansion comes even as investment banks and other firms in the U.S. slow hiring as concerns about inflation and a tight labour market.