NRA's top lobbyist resigns amid turmoil within the group

Christopher Cox
In this April 26, 2019 file photo, National Rifle Association Institute for Legislative Action Executive Director Christopher W. Cox speaks at the NRA-ILA Leadership Forum in Lucas Oil Stadium in Indianapolis. The National Rifle Association's top lobbyist has resigned in another sign of infighting within the powerful gun lobbying group, Wednesday.
Michael Conroy | AP