Pierce Butler, Charles Ilfeld Company v. Hernandez…
“ The allowance claimed would permit petitioner twice to use the subsidiaries' losses for the reduction of its taxable income. By means of the consolidated returns in earlier years it was enabled to deduct them. And now it claims for 1929 deductions for diminution of assets resulting from the same losses. If allowed, this would be the practical equivalent of double deduction. In the absence of a provision of the Act definitely requiring it, a purpose so opposed to precedent and equality of treatment of taxpayers will not be attributed to lawmakers. ”
