There were continuing disputes with the Americans over deep-sea fishing rights, and in early 1871, an Anglo-American commission was appointed to settle outstanding matters between the British (and Canadians) and the Americans. Canada was hoping to secure compensation for damage done by Fenians raiding Canada from bases in the United States. Macdonald was appointed a British commissioner, a post he was reluctant to accept as he realised Canadian interests might be sacrificed for the mother country. This proved to be the case; Canada received no compensation for the raids and no significant trade advantages in the settlement, which required Canada to open her waters to American fishermen. Macdonald returned home to defend the Treaty of Washington against a political firestorm.