American Congressman David Wilmot proposals that slavery should be
disallowed in any territory acquired from Mexico. This proviso
passes the House of Representatives but fails to pass the Senate
through opposition of Southern senators.
Citation:
Editors. "David Wilmot proposes slavery ban in territory acquired from Mexico".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18104, accessed 19 June 2013.]