Oberlander immigrated to Canada with his wife Margaret in 1954, where he ran a successful construction business and lived in
Kitchener-Waterloo, Ontario. He became a Canadian citizen in 1960. On 28 February 2000, Judge Andrew MacKay reported his findings: he concluded that there is no evidence that Oberlander was involved, directly or indirectly, in committing any
war crimes or any
crimes against humanity. He might not have, however, disclosed his wartime record during his immigration interview in 1953 in
Karlsruhe, Germany. The Government of Canada determined that withholding this information was sufficient reason to strip Oberlander of his Canadian citizenship. The
German Canadian Congress and the
Ukrainian Canadian Civil Liberties Association lobbied against this, arguing there was "no compelling evidence that there are any such people hiding in Canada," and
Andrew Telegdi, who was Oberlander's Member of Parliament, and who was at the time
parliamentary secretary to the
Minister of Citizenship of Immigration, resigned from that position in objection to this decision. In October 2008, the government revoked Oberlander's citizenship. In November 2009 the
Federal Court of Appeal struck down this decision, thus reinstating his citizenship. Oberlander appealed the 2012 order to the
Federal Court of Canada, which the court rejected in 2015. Oberlander then appealed the 2015 decision to the Canadian Federal Court of Appeal. In 2016 the court accepted his appeal, setting aside the government's 2012 Order in Council. In July 2016, the
Supreme Court of Canada denied the government's request for leave to appeal the decision. Consequently, in order to deport Oberlander for trial, the government must first prove that he was a willing participant in death squad activities due to a 2013 Supreme Court ruling that guilt by association is not sufficient grounds to be considered a war criminal. In July 2017, the Government of Canada used an
Order in Council to strip Oberlander of his Canadian citizenship for the fourth time. In September 2018, Federal Court judge Michael Phelan ruled that this fourth revocation was lawful. Only the
Federal Court of Appeal can hear an appeal of Phelan's decision and Oberlander did not have an automatic right to appeal the latest court decision but had to seek
leave to appeal. A news report stated that he "faced increased risks of prosecution if ever deported to Germany, where he was once a citizen. In a change of policy, Germany is now trying former auxiliaries in their 90s for being accomplices in Nazi war crimes". On 25 April 2019, the Federal Court of Appeal dismissed Oberlander's motion to have his case re-opened because of an alleged bias by Justice Michael Phelan in 2008. The decision of the Appeal court was unanimous. In October 2020, he lost his appeal to the
Immigration and Refugee Board, and would move onto a deportation hearing. In April 2021, the Federal Court of Canada dismissed Oberlander's lawyers' attempt to halt deportation proceedings. ==Death==