“Color-coded maps were widely distributed to employees at headquarters in Seattle. Travel to green states like Michigan was okay, but orange states like California required special clearance so that the legal department could track the cumulative number of days Amazon employees spent there. Travel to red states, like Texas, New Jersey, and Massachusetts, required employees to complete an intensive seventeen-item questionnaire about the trip that was designed to determine whether they would make the company vulnerable to sales-tax collection efforts (number 16: “Will you be holding a raffle?”). Amazon lawyers then either nixed the trip altogether or obtained a private letter ruling from that state spelling out its specific treatment of that particular situation.”