Can Democrats end the decades-long impasse on gun control?

The recent mass shootings in Boulder, Colo., and the Atlanta area that led to a total of 18 deaths have reignited the debate over gun control in Washington.

President Biden on Tuesday called for Congress to pass an assault weapons ban, a ban on high-capacity magazines and the elimination of loopholes in background checks for gun purchases. "This is not and should not be a partisan issue. This is an American issue. It will save lives. American lives. And we have to act," he said. Biden’s comments, along with similar...