[contentcards url=”https://www.oann.com/newsroom/hallie-widow-of-beau-biden-who-later-dated-hunter-recounts-how-first-son-introduced-her-to-crack-before-finding-his-gun/”] OAN’s Sophia Flores Hallie Biden, Beau Biden’s widow turned Hunter Biden’s ex-girlfriend, was called to the stand on day four of Hunter’s federal firearms…