Getty Speaking at the Fortune CEO Initiative in San Francisco Monday evening, Apple CEO Tim Cook explained why he chose to speak publicly against President Trump's immigration policies. Cook thinks CEOs should be cautious about commenting on issues where they don't have "significant standing," but urged CEOs to speak out when a public policy doesn't align with their company values. "If you don't [speak out], you're in the appalling silence of good people category, and this is something I've never wanted to be a part of," Cook said. SAN FRANCISCO -- Apple CEO Tim Cook thinks chief executives should speak out when public policy contradicts their companies values. Speaking at the Fortune CEO Initiative on Monday evening, Cook said he thinks companies should only speak out when they have a "significant standing" in a public issue.