I found a webpage that said, “Starting September 30, 2025, the federal government will stop issuing paper checks for most federal payments.” Is that what you’re thinking of?
Sorry, in looking further, this press release seems to be what you’re thinking of. (“The Federal Reserve Board on Thursday requested public input on the impact of potential strategic changes to check services provided by the Fed, as well as check usage and preferences.”) I see comments provided by other people so there must be a working way to provide input.