HARTFORD, Conn. (AP) - Connecticut's congressional delegation is becoming known for its united stance on gun control measures.

U.S. Sen. Chris Murphy's 15-hour filibuster last week marked a high point for what's become a signature cause for him and others in the state's Democratic delegation. It was an effort to press for votes on two gun control measures.

All of Connecticut's members of the U.S. House participated Wednesday in a sit-in, demanding a vote on gun violence legislation.

But some Republicans and gun rights advocates aren't impressed.

State Rep. Dan Carter, a Republican challenging Democratic U.S. Sen. Richard Blumenthal in November, says the group focused so much on the gun issue following shootings in Newtown, Orlando, Florida, and elsewhere that it has neglected other issues, such as fighting terrorism or overall violence in society.