From Afghanistan, he and his family returned home to Canada in 2009. On May 2, 2011 the people of Ajax-Pickering elected Minister Alexander as their MP. On May 25, 2011, he was named Parliamentary Secretary to the Minister of Defence. On July 15, 2013, he became the Minister of Citizenship and Immigration.
Minister Alexander has also recently published his first book, entitled A Long Way Back: Afghanistan's Quest for Peace. It explores what has become of Afghanistan since the US–led invasion in 2001 and the challenges that are presented in a country that has not experienced real peace since the late 1970s. The complexity of Afghanistan and its history are analyzed with an overarching hope for a future of reconciliation and prosperity for the people of Afghanistan. It is argued that this hope can only come to fruition if neighbouring Pakistan can control its borders and be reassured of its own place in Afghanistan's future.