Edward L. Plumb to William H. Seward, May 12, 1868

Mr. Plumb to Mr. Seward.

Sir: One of the embarrassments to which commerce is subjected in this country is the exaction of local duties upon merchandise passing from the ports, or place of its introduction, through the different States to its destination in the interior.

This is especially felt at the points as at this capital, where the means of transportation are changed and merchandise is delayed by the necessary arrangements for its further conveyance, or other reasons, for periods of greater or less duration.

On the 1st instant a law was passed by the Mexican congress which should obviate this difficulty, as it provides that no duties shall be collected by any State upon the simple transit of merchandise through its territory.

On the same day, however, an executive order was issued through the department of treasury, which prescribes that the period for which merchandise passing through this capital, and being delayed, shall be entitled to exemption from local duties, shall be limited to ten days; and that, passing that period, those duties shall be collected upon such merchandise, although the same may not be destined for consumption at this place, and will have again to pay similar charges at the place of its final destination.

I have the honor to transmit to the department, herewith, translations of the law of congress, and the executive order referred to.

I am, sir, very respectfully, your obedient servant,