I'm not comparing what one country is doing in relation to others. I'm saying that the CDC has their own criteria of what cases qualify for tests. They're not going just wake up one morning and say "yep let's ramp up to 300M test kits because people in the web are up in arms", that's not how it works. They look at the data they have then decide what to do. That's what risk/cost analysis is.
What you seem to be missing from my point is that things take time to do and larger bureaucratic institutions move slower. While the CDC hasn't formally stated the reasons for delays in test ramp up, it's entirely plausible that they're slow to update their analyses, recommendations and action plans because of broken telephones/bureaucracy/politics/etc. If, as the rumors go, the CDC arm needs money to make test kits but the president says "nah can't be that bad", then yeah you can bet things are gonna move very slow.
With all this said, I'm not sure why you are using the word "justify", as if the involved parties are naughty kids to be spanked. I'm not very interested in armchair judgment.