UPDATE 1-U.S. judge in Staples fight with FTC pushes back at firm's arguments
April 19, 2016 at 18:11 PM EDT
WASHINGTON, April 19 (Reuters) - The judge hearing a fight between the U.S. government and Staples Inc over whether the No. 1 office supply store may merge with a smaller rival expressed doubt on Tuesday over several arguments made by the company.