Is magic missile affected by Shield of Missile Attraction?

@JeremyECrawford @mikemearls Is magic missile "ranged" for purposes of being attracted and half damage by Shield of Missile Attraction?

— (((Rob Twohy))) (@rob2e) July 11, 2016

A shield of missile attraction affects ranged weapon attacks. Magic missile isn't a weapon or an attack. #DnD https://t.co/zNVV4xoS6g

— Jeremy Crawford (@JeremyECrawford) July 11, 2016