When all else fails, find a scapegoat.
What horseshit.
A team of US engineers designed the craft and are responsible for the ongoing servicing of the program.
Part of the design process is qualification and testing of the components that went into the product and making sure they were fit for purpose.
If they designed in a defective component, then failed to respond when the component was found to be defective, then that was their fault.
Likewise, NASA is, as the name says, an Administration. They are filled with Administrators. Part of the administrators' reponsibilities is to ensure that the projects are audited and run well so that public money is not wasted.
All we're seeing here is a bunch of defective administrators and engineers looking for a scapegoat.