Under the terms of the Convention of August 1827, a policy of joint
occupation of Oregon had been agreed by the USA and Britain.
However, the US Senate now resolves to put an end to the
arrangement.
Citation:
Editors. "US Senate resolves to end British joint occupation of Oregon".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18096, accessed 18 June 2013.]