This year's protests and the armed gangs of vigilantes seen in some cities have fuelled the debate on gun control, against a backdrop of rising gun sales.
By Joel Gunter
Culpeper County, Virginia
Canada PM Justin Trudeau is banning the sale of 1,500 models and variants of assault rifles and weapons.
New Zealand has "fundamentally changed" since the Christchurch mosque attacks, says PM.
By Jonathan Head
BBC News, Bangkok
By Tara McKelvey
By Rachael Garside
The move has been called "fundamentally flawed" by those who already have licences
President Trump says he feels strongly about the Second Amendment but hopes Congress can still act.
By Roland Hughes
BBC News, Washington DC