That will have to happen, sooner or later. And with all that youthful energy directed into businesses that pay no taxes, Obama is going to have a big image problem if he turns the IRS loose on his own base. :)
They are practically inviting all of these kids to work beyond the reach of the tax-man. If they work on the books, they will never pay it off, in many cases. If they work under the table, collect whatever benefits they can from the welfare state, they can actually prosper as many illegals have discovered.