Oversight: As the Senate votes to de-fund Acorn, add pimping, tax evasion and human trafficking to voter fraud paid for with taxpayer dollars and you have an organized criminal enterprise. It's time to investigate.After Acorn workers were caught on tape in three cities allegedly abetting what they believed was a fraudulent-mortgage and sex-trafficking scheme, the Senate has voted overwhelmingly to strip the group of funding in the Transportation/Housing and Urban Development appropriations bill. The amendment, offered by Nebraska Republican Sen. Mike Johanns, passed by an 83-to-7 margin and marked the third time this year that Republicans have tried to block...