In Canada, possession of semi-automatic assault weapons is prohibited with narrow exemptions. Applicants for a firearm license must pass background checks which consider criminal, mental, addiction and domestic violence records.
The minimum waiting period is 28 days on the first application and you must have two people vouch for you.
Germany tightened gun laws after a school shooting left 18 people dead in 2002.
Possession of handguns and semi-automatic assault rifles are allowed only with special authorization. People wanting to buy a hunting rifle must undergo background checks that can last up to a year.
U.S. laws reflect Americans' unique attitudes about guns. They are part of the country’s constitution, and part of its culture.
"You get your kid’s first rifle and go hunting together,” said Howell. “It's a totally different culture – a culture that's lasted 200 years."