Rep. Cummings , chairman of House oversight committee, says he will investigate gun violence in America and sent a letter to ATF seeking documents about gun dealers.

NEW: @RepCummings, chairman of House oversight committee, says he will investigate gun violence in America and sent a letter to ATF seeking documents about gun dealers. pic.twitter.com/IFRjTTeRok

— Sheryl Gay Stolberg (@SherylNYT) August 9, 2019