The tech industry is mounting more and more protest against the “inhumane” immigration policies of the Trump administration. In an open letter posted to Microsoft’s internal message board, more than 100 employees protested the software maker’s work with Immigration and Customs Enforcement and asked the company to stop working with the agency, which has been separating migrant parents and their children at the border with Mexico. “We believe that Microsoft must take an ethical stand, and put children and families above profits,” said the letter, which was addressed to the chief executive, Satya Nadella. The letter pointed to a $19.4 million contract that Microsoft has with ICE for processing data and artificial intelligence capabilities.