A drug dealer who pays his taxes has committed less crimes than one who doesn't unless the IRS reports income to the DEA, then tax savings are a benefit of drug dealing as filing taxes becomes a violation of the 5th amendment.
That's a great point, and I didn't think of that. Taxes should allow you to admit to any crimes with zero repercussions. If you list income from your child prostitution ring, it should be illegal to save the children because it violates the sanctity of CPA-client privilege.
Ah yes, think of the children is always a good way to defend a country of laws from becoming a defensless emotional wreck that has a future worthy of no child.
I don't understand your convoluted question. In any case, I'm fairly certain it misses the point. Going after people via their taxes is not going to achieve the intended effect of kicking people out. Instead it will backfire in unintended ways, just like prohibition boosted and cemented organized crime in America.
Actually, NOT going after undocumented people via their taxes won't achieve the intended effect you're hoping for. Instead it will backfire in unintended ways even more.