Congratulation on new $100 bill. rather than leave the old ones in circulation, why don't you demonetize them and give an amnesty for two months on criminal penalities if people can not account for where they got them when they turn them in them provided they pay a 50% tax. That should get back all the money that is in the hands of criminals that taxes have not been paid on and make a big contribution to reducing the deficit.
Idea No. 63