US Presidency
1841

However desirous the United States may be for the suppression of the slave trade, they can not consent to interpolations into the maritime code at the mere will and pleasure of other governments. We deny the right of any such interpolation to any one or all the nations of the earth without our consent. We claim to have a voice in all amendments or alterations of that code, and when we are given to understand, as in this instance, by a foreign government that its treaties with other nations can not be executed without the establishment and enforcement of new principles of maritime police, to be applied without our consent, we must employ a language neither of equivocal import or susceptible of misconstruction.