evidence: Accounting for challenges in data comparisons, our review found an increase of 300% in illegal immigration from Trump’s first full month in office, February 2017, to his last full month, December 2020. [...] "Remain in Mexico" likely decreased illegal immigration, but it wasn’t the only factor and it’s hard to quantify its impact, said Aaron Reichlin-Melnick, policy director at the American Immigration Council, an immigrants' rights advocacy group. [...] Phone interview, Aaron Reichlin-Melnick, policy director at the American Immigration Council, Nov. 28, 2022