The US is far beyond containment at this point. As are many other countries right now, as well. Only when the cases go down again due to successful measures is containment an option again, as you need enough resources to trace contacts and test every potential infection.
"Only when the cases go down again due to successful measures is containment"
We have already taken measures to contain the virus. So why aren't we preparing these needed resources for testing and tracing while the lockdowns are in effect? Two months will pass and we will be no better prepared than we are today because no government in the US is working towards this. The containment will be for nothing, just a temporary measure that will have to be repeated over and over because we aren't even trying to implement a better solution.