Re “Empathy, but also realism, in facing immigration’’ (Opinion, June 26): “The question,’’ writes Niall Ferguson, “is not whether to stop migration but how to manage it.’’ For once I agree with him. Since humans evolved, we have migrated, responding to declining food supplies, adverse climate changes, and the hardships of war.

Yes, our immigration policy is broken, and Congress must fix it. However, the United States must do this, not alone, but as a member of the community of nations. Human migration affects all countries, and nation states are connected in ways our forebears could never have imagined. This is a time to reject the isolationism that is gaining ground in the United States and instead to turn toward the world.

Helen P. Netos

Jamaica Plain