WASHINGTON, _August 8, 1842_.
_To the Senate of the United States_:
In the communication made to the Senate on the 13th of June, in answer
to its resolution of the 2d of March last, there appears to have been,
among other papers, sundry letters addressed to the Department of State
by certain claimants or their agents containing reflections upon the
character of the umpire appointed by His Prussian Majesty pursuant to
the convention between the United States and the Mexican Republic of the
11th of April, 1839. As the call was for all communications which had
been addressed to the Department of State by any of the claimants under
that convention relative to the proceedings and progress of the mixed
commission, the copies were prepared and submitted without attracting
the attention either of the head of the Department or myself. If those
letters had been noticed, their transmission to the Senate, if
transmitted at all, would have been accompanied by a disclaimer on the
part of the Executive of any intention to approve such charges. The
Executive has no complaint to make against the conduct or decisions of
the highly respectable person appointed by his sovereign umpire between
the American and Mexican commissioners.