Smith Thompson,
The United States v. Tappan — Opinion of the Court
“ It requires the Collector, whenever, in his opinion, there shall be just grounds to suspect that goods, subject to an ad valorem duty, have been invoiced below their true value, at the place from which they were imported, to have them appraised. This power is, to act upon a supposed case of fraud, attempted to be practised on the government, by making out the invoice below the actual cost. The great object to which the attention of the Collector is directed, is to ascertain the cost, that being the basis on which the duties are to be estimated. ”
