It's a setback because it's another case of overzealous prosecution that fell apart because the basis was entirely false. In the end they harmed the career of a

It's a setback because it's another case of overzealous prosecution that fell apart because the basis was entirely false. In the end they harmed the career of a scientist because he had some affiliation with China, which, duh, he grew up there. It calls into question the basis of the whole initiative.