As Congress debates new legislation on firearm restrictions in the wake of two high-profile mass shootings, the National Rifle Association is playing a diminished role. But thanks to years of shedding its claim to bipartisanship and aligning almost entirely with the Republican Party, the country’s premier pro-gun lobby’s agenda has firmly planted its agenda within the GOP, a legacy that continues to frustrate efforts to change gun laws.As Congress debates new legislation on firearm restrictions in the wake of two high-profile mass shootings, the National Rifle Association is playing a diminished role. But thanks to years of shedding its claim to bipartisanship and aligning almost entirely with the Republican Party, the country’s premier pro-gun lobby’s agenda has firmly planted its agenda within the GOP, a legacy that continues to frustrate efforts to change gun laws.