A study published last year about the cost of illegal immigration highlights the border policy differences between Donald Trump and Kamala Harris. When Joe Biden became president in January 2021, he immediately halted construction on Trump’s border wall, as well as ended his “remain in Mexico” policy for asylum seekers, terminated the agreements the previous administration made with the so-called triangle Central American nations regarding the flow of migrants, and paused deportations for those in the country illegally. A flood of over 10 million migrants followed, including known getaways, av…