She says she voted to protect Second Amendment rights.
North Dakota Sen. Heidi Heitkamp says she could not support a measure to tighten restrictions on the sale of guns because it would have placed undue burdens on law-abiding people.
A measure to expand background checks for the sale of guns failed in the Senate. Heitkamp was one of five Democrats who voted against it.
In a statement, Heitkamp says she has thought a lot about the background-check measure and heard from North Dakotans. She says she voted to protect Second Amendment rights.
Heitkamp says she believes the focus of gun safety should be on mental health issues, full and accurate reporting to a national database that keeps track of those not eligible to buy guns, and making sure criminals are prosecuted for possessing guns or trying to get them.