We have seen this over and over on so many issues championed by the Left and Republicans never learn from it.
Here is what they should do: The Senate should hold a similar hearing on reciprocity and only invite pro-gun speakers to testify in favor of it. There should be a full court press with antigun advocates excluded. Pro-gun politicians should publicly mock gun control positions, denigrate the astroturf advocates and shout-down the gun control politicians when they interrupt. There is no reason for them to just sit back and hope the issue of gun control will simply go away. Same with the NRA. They need to push pro-gun Congressmen on this.