Democratic vice presidential pick urges strengthened background checks, closing gun show loophole, limiting combat weapons and expanding mental health services.
The president spoke about the deadliest mass shooting in U.S. history.
Colson was an undercover narcotics officer in the Prince George's County Police Department.
Jason Dalton, the Uber driver suspected in this past weekend’s deadly shooting spree in Kalamazoo, Michigan, may have switched cars before the lethal rampage.
Improving mental health care is a distinct issue from decreasing gun violence, the authors write.
State executives already have substantial authority to implement new rules to reduce gun violence.
In most states, background checks are not required at gun shows and on the Internet.
Jabari R. Dean, 21, faces up to five years in prison if found guilty.
In 1996, Congress stripped the CDC of funding for any research that might back gun control.
The Democratic presidential candidate wants to overturn a 2005 law that grants immunity to gun dealers and manufacturers.
Four suspects fired 17 shots at two teenage boys in North Philadelphia over the weekend.
Gun deaths in Virginia will be 31 percent higher than road traffic deaths by 2019.
Parker's daughter was fatally shot, alongside a colleague, on live TV two months ago in Virginia.