It always amazes me there isn’t a publicly accountable oversight committee that comes with every major privacy violating power. The courts alone aren’t sufficent. And secret courts like FISA that are only selectively required are doubly insufficient.
When I was a teenager I worked with a city council member in my hometown to help establish an independent oversight committee for the local police department. Within a month, the council member was pulled over and given a ticket, and her teenage daughter was pulled over and given a ticket. They don't say ACAB just because it's catchy.