People say they want evidence. Short of walking out of an NHI or flying a UAP over Congress in real time, please define what you want to see? I mean it... state what you want? And how you would get it and believe it?
I'll give you my approach: So, what Congress is doing is the beginning of a scientific and forensic process. They are collecting verified data (see the UAP amendment), and getting sworn oaths, which will lead to and allow them to invoke investigatory powers. This is both a legal and a political process, but it uses tools of science.
As in a scientific process you collect and organize the observations and facts. AARO, as much as some of us might be disappointed at times, still is collating data and will have renewed resources with the UAP amendment. But data will be collected, collated, etc., and expanded upon. A Review Committee will be set up and presumably, a report written as per the amendment.
There is no picture, no video, no words anyone will accept anymore without a rich chain of custody of trust. If that's what people want AT A MINIMUM... they will stop complaining, and nitpicking, and support the process.
The hearing today invoked the Holman rule and intimations of fraud... meaning attempts to hide materials or obfuscate could lead to charges of obstruction of justice. The retaliations mentioned by Grusch could lead to serious issues for those who initiated them. At the very least shining a light on the process might slow down attempts to hide things deeper and allow access to the information.
Anyone truly interested in an answer would support the process. Processes take time.
It took us a few billion years to get to this point in life on Earth, so the possible confirmation that it's a bigger Universe than we previously supposed can wait while we let everyone catch up on the story, agree to what is verifiable versus not, and maybe "evolve" in our appreciation of what might be a rewrite of our very place in that reality.