In an attempt to bolster her position on gun control, Hillary Clinton is expected to accept the endorsement Tuesday of the Brady Campaign to Prevent Gun Violence, a campaign aide told Politico. On the campaign trail, the Democratic presidential front-runner has made calls to "stand up to the NRA," while lambasting her main rival, Vermont Sen. Bernie Sanders, for his record on gun control.

“It’s the only industry in our country where we have given that kind of carte blanche to do whatever you want to do with no fear of legal consequences,” Clinton told CBS Sunday. "And [Sanders] often says, 'Well, look, I’m from Vermont and it’s different. It’s not like being in New York City.'”

Gun control discourse has gained momentum on the campaign trail in the face of recent mass shootings such as the Inland Regional Center in San Bernardino and Umpqua Community College in Umpqua, Oregon. However, Clinton's stance on gun control has not always been resolute. While on the campaign trail in 2008, she recalled childhood memories of duck hunting and championed the Second Amendment, according to Time.

“You know, my dad took me out behind the cottage that my grandfather built on a little lake called Lake Winola, outside of Scranton, and taught me how to shoot when I was a little girl,” Clinton said in April 2008. “It’s part of culture. It’s part of a way of life. People enjoy hunting and shooting because it’s an important part of who they are.”

Clinton will be joined Tuesday by Brady Campaign President Dan Gross while at a campaign stop in Ames, Iowa, when she is scheduled to accept the endorsement. Gross released a statement in support of the former secretary of state ahead of the rally.

“Hillary Clinton has been a national leader on gun violence prevention for decades. More than any candidate on either side of the aisle, she has the experience, record and demonstrated commitment to help reach the Brady Campaign’s goal of cutting gun deaths in half by 2025,” Gross said. "She was with us when we passed the Brady Bill in 1993, she took on the corporate gun lobby by fighting the truly evil Protection of Lawful Commerce in Arms Act, and now she’s made gun violence prevention a centerpiece of her campaign, supporting a policy that’s already saved lives in Iowa: expanded Brady background checks on gun sales."

Clinton's husband, former President Bill Clinton, signed the Brady Bill in 1993 to require prospective handgun buyers to undergo a background check before purchasing a firearm.