I think this argument is wrong. It’s wrong because it conflates good politics with good policy. It may be true that Democrats would benefit politically by taking a harder line on illegal immigration, as Bill Clinton benefitted in the 1990s by taking a harder line on welfare and crime. I’m not sure. The contention is plausible but difficult to prove. Regardless, family detention is a terrible response to a largely fictitious crisis. It would be lovely if shrewd politics and sound policy always went hand in hand. But it’s important for commentators to acknowledge that, often, they don’t. [...]
There’s some truth to this. As the Hamilton College political scientist Philip Klinkner has shown, using data from the American National Election Study, Trump outperformed Mitt Romney among voters with negative views of undocumented immigrants. And, crucially, he did no worse among voters with positive views. In Klinkner’s words, “Trump won in 2016 by mobilizing the minority of Americans with anti-immigration views—but only because he avoided an offsetting counter-mobilization by the majority of Americans with pro-immigration views.” [...]
Frum, Sullivan, and Zakaria think Democrats need a middle path. They should oppose Trump’s most brutal policies while more clearly acknowledging public anxiety about illegal immigration and endorsing measures to stop it. The theory, presumably, is that such a strategy could lure back some white voters who flipped from Obama to Trump over immigration without depressing turnout among the Democrats’ pro-immigrant, young, progressive, and minority base. In the hands of a gifted candidate, this might work. Bill Clinton appeased white voters in 1992 and 1996 with his punitive stances on welfare and crime while still galvanizing a large liberal and African American turnout. Barack Obama took a harder rhetorical line against illegal immigration in 2012 than Hillary Clinton took in 2016 yet won a larger share of the Latino vote. As I’ve noted previously, Democrats might benefit from emphasizing the virtues of assimilation, and focusing on helping immigrants learning English, thus counteracting Trump’s claim that immigration undermines national unity. [...]
This is misleading. Over the last decade, illegal immigration has been going down. Between 1983 and 2006, according to the Border Patrol, the United States apprehended roughly one million—and sometimes as many as 1.5 million—undocumented immigrants per year along America’s southwest border (where the vast majority of undocumented migrants cross). That number steadily dwindled during Obama’s presidency. In fiscal year 2016 (which began in October 2015 and ended in September 2016), it was 408,000—less than half the number in 2009. [...]
But the evidence for this argument is weak. In a 2007 study of undocumented Mexican migrants, Wayne A. Cornelius of the University of California at San Diego and Idean Salehyan of the University of North Texas found that “tougher border controls have had remarkably little influence on the propensity to migrate illegally to the USA.” Surveying the academic literature for The Washington Post this March, Anna Oltman of the University of Wisconsin at Madison noted that, “researchers increasingly find that deterrence has only a weak effect on reducing unauthorized immigration.” A weak effect isn’t no effect. Trump’s anti-immigrant rhetoric and policies probably contributed to the drop in border crossings last year. Yet those numbers are now returning to their pre-Trump levels. In early April, in an effort to push them back down, the Trump administration announced that it would separate parents and children. Yet the number of apprehensions in both April and May was almost identical to the number in March.