By The Washington Post Editorial Board October 11, 2015 https://www.washingtonpost.com/opinions/what-americans-think-should-be-done-on-illegal-immigration/2015/10/11/4f6f6df6-6ed7-11e5-9bfe-e59f5e244f92_story.html The foreign-born share of the U.S. population has doubled in the past three decades and now stands at its highest ...