Afghanistan feeds U.S. immigration crisis

President Biden is struggling with a Gordian knot on immigration that there's little he can do to untangle: The nation's broken system is making it harder than it should be to manage the Afghan refugee crisis — and the Afghan refugee crisis is making it harder to fix the system.

By the numbers: If the military’s task of adding 50,000 spots to bases by mid-September to temporarily house Afghan refugees sounds like a lot, consider that there have been more than 1.2 million undocumented border crossings since last October.

Meanwhile, pandemic...