The U.S. Treasury Department—the government agency that makes coins and money—would create special commemorative coins marking 25 years since the September 11, 2001 attacks. These coins would be sold to collectors, and extra money charged on top of each coin's cost would go to help fund the National September 11 Memorial and Museum in New York, the site that honors victims and educates visitors about the attacks, covering its day-to-day running costs. If the government ends up minting more coins than a set yearly cap allows, though, that extra fee wouldn't apply. No taxpayer money is used here—it's funded entirely by people who choose to buy the coins.