Trump Has Built a Wall of Bureaucracy to Keep Out the Very Immigrants He Says He Wants

Samir came to the United States from India in 2006 as a graduate student. He got a master’s degree in environmental engineering, and after a few internships where he picked up programming skills, he was hired in 2010 by UnitedHealthcare, a Fortune 500 insurance company based in Minnesota. He loved his job streamlining its claims process. “There were days where I worked three days nonstop, no sleep, nothing, because we wanted people to get cured—they need to get the treatment,” he recalls. “I put my soul in there.”

The insurance...