It's a huge problem that Russia and other enemies are continuing to fuck with our election process, and it's a disgrace that Trump and the Republicans are supporting them in that effort. The Twitter bot deployment against Harris is another disturbing data point on this issue that needs to be recognized and addressed.
That said, how does Kamala not have an answer to Tulsi's criticism? It's a huge problem that Kamala could only muster "I'm proud of my record," rather than something like "that's complete nonsense, I didn't do anything like that, I took over one of the largest prosecutor's office in the country and instituted these reforms: x, y, z. You're misrepresenting things that I actually took the lead in fixing." Even on CNN post-debate, she had no answer, just dismissed Tulsi as a loser.
What else does the audience conclude but that Kamala did withhold evidence that exonerated someone, did oppose the release of prisoners to exploit their labor, and was extremely harsh on pot offenders. Not just that, but that she's proud of it today and has no regrets!
Even if she fixes this, what does it say about her that she wasn't prepared to address her biggest vulnerability during the second debate? What's she going to do when Trump just makes up shit about her during a debate?