Biden heckler avoids charges after interrupting speech over son's death in Afghanistan
• Charges dropped against father who heckled Biden about his son's death in Afghanistan • Steve Nikoui, 51, interrupted Biden's State of the Union speech shouting "Abbey Gate" • Nikoui's son was killed in 2021 bombing at Abbey Gate during Afghanistan withdrawal • Nikoui said he held Biden responsible for his son's death • Prosecutors declined to pursue charges, similar to past cases involving protesters