sentences:  The Brady Campaign to Prevent Gun Violence opposed the arguments made by the plaintiffs in "Parker", and filed amicus curiae against those arguments in both the District and Circuit courts.Paul Helmke, the president of the Brady Campaign, suggested to D.C. before the Court granted certiorari that it modify its gun laws rather than appeal to the Supreme Court.Helmke has written that if the Supreme Court upholds the Circuit court ruling, it "could lead to all current and proposed firearms laws being called into question."