The US, like the UK, did a terrible job early on when containment was most critical. Several states are in lockdown now but arguably, the reason for our awful current new cases/death rate is due to the resistance to taking action in February when it first hit. There are also many places in the US that are not in lockdown. From another comment: “Approximately 44 of 50 states have lower per capita death rates than Sweden.“ The US cannot be compared directly to Sweden because it doesn’t have a single policy like Sweden. It’s also worth noting that Sweden has taken some lockdown measures ie your comment about “no lockdown” isn’t accurate. Finally, it’s early days and time will tell. The UK changed their policy because there is no credible evidence that herd immunity is effective. I believe Sweden will as well once the disease spirals out of control. And hopefully less people will die as a result. Unfortunately, there will also be the insufferable few that claim we could have survived without being cautious because you can’t prove that those measures were responsible for saving lives. Don’t be that person.