Congress requested for information on whether or not Twitter was properly following the consent decree when Musk gave Tabibi and the others access to the files. Twitter is legally required to assess the possible privacy impact of anything surrounding user data. That's all that was requested. They did not request Twitter to stop providing the journalists access, just that they had done the necessary precautions to avoid accidentally leaking out sensitive user information.
Tabibi of course screamed that he was being censored by the government. I leave you to your own conclusions there.
[0]: After the entire legal team resigned en-masse when they had to put their signatures down for something, presumably the new Twitter Blue. Musks current policy is that engineers are independently liable for FTC violations, which I'm pretty sure is not how it's supposed to work.
