Your comment is so unrealistic and glosses over so many details I wonder if you're the type of politician that gets elected by saying you'll ban the Internet or force porn sites to require identification, and then have to face reality that it's a little more complicated than that.
I wouldn't even know where to start explaining that what you're asking for is a very hard problem even for a very closed political and economical system like China.
I think you're saying this would be a big hassle, maybe for miners. Can you explain that more?
- One can create an unlimited number of addresses for a single wallet. The size of your banned_addresses.csv updated every morning is for all intents and purposes unbounded.
- The hard problem is proving if the beneficiary is an Iranian national. It's already difficult to do in the regular economy with KYC regulations and everything is government controlled (shell companies, etc.), doing so with Bitcoin is even harder. I don't mean hard as in "the US govt has the resources to do it", I mean hard as it's pretty much impossible.
Please don't take this the wrong way, but learn a little bit about Bitcoin, if you really want to do something about the problems it poses. It's overall pretty simple. Otherwise you're just another person that has strong opinions about something they don't know anything about.