A Maine Democratic congressman says he failed his state by not opposing assault weapons during his career

• A Maine Democratic congressman has now backtracked on his opposition to ban assault weapons.
• "The time has now come for me to take responsibility for this failure," Rep. Jared Golden said. 
• Golden reversed his stance in the wake of the deadly Lewiston massing shootings.

A Democratic Maine congressman has backtracked on his opposition to an assault weapons ban in the wake of the deadly Lewiston mass shootings, calling his previous stance a "failure."