One thing that coronavirus didn’t change in the US was the country’s shocking rate of gun deaths: even under widespread lockdowns, mass shootings spiked sharply. But Joe Biden has declared his intention to address a scourge he has described as a national embarrassment. What can actually be done? And is a beleaguered NRA quite the obstacle it once was? Andrew Mueller speaks to Kris Brown, Robert Spitzer and Frank Smyth.