This may not relate totally to your area of expertise, but I bring it up as another area of missed opportunity for government revenues, and that's the underground economy in this country. Working for cash is another way to say it. Some people call it the black market.
A study that I'm aware of from the mid-nineties in the housing and renovation industry estimated that $6.9 billion was lost in revenue annually from the building and construction industry.
Do you have any views on how we might recover more of that unpaid tax where people are having their shingles replaced on their roof or having their driveway redone, and it's all done on a cash basis? Is it a big problem in your mind?