I have long fantasized about doing this exact same thing, especially to MAGA-types who somehow got my address and are mailing me requests for donations. Someone in those groups as well as THE SALVATION ARMY have discovered that those postage guaranteed reply envelopes cost money and prompt this response. So now all that stuff requires a stamp if you want to reply. I hope that’s cut down on their fundraising efforts.
I wonder if anyone in the Badminstration, specifically the Department of Agriculture, have thought about all the crops that will go unharvested in the fields starting around August because migrants won’t go out to pick them for fear of being deported by ICE.