So, I make three predictions:1. NASA will be put on the track of withdrawing from ISS in 2024. The decision will not formally be made during the hearing, but that will be the drift.2. Noises will be made about privatizing ISS or offering NASA's share to the international partners, quite possibly in tandem with the notion that NASA would rent space aboard ISS.3. There will be no serious discussion of the difficulties or costs involved in either disposing of ISS or giving NASA's share to a commercial entity or foreign space agency.
Two other witnesses have been added to the hearing, namely the president of the Commercial Spaceflight Federation and a professor specializing in biotech. So, it no longer looks like show trial.
...I'm not much of a space station fan but I would certainly hope they take the matter seriously since, outside of the ISS, the best bet for the immediate 10 years for a destination is lunar orbit, but not Luna itself.
This is a thoughtful hearing, with good witnesses. No easy answers to question of extending ISS beyond 2024.