I'd simply not respond to them, at all. It's legal for the Executive to ignore The House's subpoenas. Or is that only for 45's band of criminals?

Well at least we know what their strategy is. Unlike with trump which /was/is sort of like trying to divine strategy from monkeys throwing feces - it just happens.

When we get into full swing for 2024 the dems better have a strong track record of pushing back and comparing their success for 2 years compared to nothing out of the Congress for the last 2 with the GOP and their endless investigations that found nothing of substance.