President-elect Donald Trump ran on deporting millions of undocumented immigrants if he won a second term. And now that he prepares to enter the White House in January, his incoming administration has promised that mass deportations will be at the top of his mind from day one. Reuters reported earlier this week that Trump’s plan to deport a significant portion of the 13 million undocumented immigrants currently living in the United States would cost roughly $968 billion over a 10-year period. This includes the cost of hiring untold thousands of additional Department of Homeland Security person…