This is going to be a problem everywhere... but I reckon the US will be a particularly stark example. The UK is also facing the same dilemma - Scotland, Wales and England all have their own plans, but unless they all act in line with each other, then there could be a similar issue to what you are describing. Europe will also have a potentially big problem.
Both the US and the UK have seen a sustained drop in the rate of increase in new cases for the last couple of weeks, but that has now stalled at around 3-3.5% in each case - as such, both are continuing to see a stubbornly high number of new cases, with no clear drop in either case... in fact, the US has seen an increase in new cases for 4 days straight, which is worrying given that lockdown restrictions haven't even been lifted yet. This indicates (to my mind anyway) that it is still too soon, possibly by several weeks, to be lifting restrictions in the US or the UK for that matter.