The government already has these problems: look at the use of real estate to launder money. Eg https://www.washingtonpost.com/news/politics/wp/2018/01/04/how-mo

The government already has these problems: look at the use of real estate to launder money. Eg https://www.washingtonpost.com/news/politics/wp/2018/01/04/how-money-laundering-works-in-real-estate https://www.washingtonpost.com/news/politics/wp/2018/01/04/h...