Even California, which was praised for locking down first and longest, is behind on testing and contract tracing.

You can blame ignorance or anti-science beliefs for the problems in some states, but the California state government clearly takes the virus seriously, is following expert advice, and still can't meet testing and tracing goals. Something else is going on here. Dysfunction of government is the answer.

The Federal government is pushing responsibility onto states, and states are pushing responsibility onto county governments. Most county governments are not equipped to deal with pandemics. There is just no way this is going to go well. The countries that did a good job testing and tracing had a central coordinated effort from the top.