before congress/the legislature/whoever approves a deregulatory scheme, someone should research why the regulations were put there in the first place and what problem they were originally intended to fix. and then, before the deregulation plan goes through, the proponents of deregulation should have to explain why their scheme won't make that old problem come back. or at least explain why deregulation would do enough good to make up for that potential harm.
i'm not against deregulation. but wherever that's required it means that at some point in the past there was a serious problem that got people to impose the regulation in the first place. sometimes the original concern is out of date and would no longer be a problem anymore. and sometimes deregulation will have enough benefits to outweigh the costs. but you don't know that unless you have a serious discussion of the costs.
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*if i had more ideas, maybe i'd actually do a post like this every day.