Following the election loss Dosanjh returned to practicing law and let his party membership lapse. There had been speculation dating back to October 2002 that Dosanjh was interested in joining the
Liberal Party of Canada.
New Democratic Party leader
Jack Layton approached Dosanjh in 2003 to see if he was interested in running as a federal candidate but Dosanjh refused. The advertising of Dosanjh emphasized the party's socially progressive aspect. In the
June election Dosanjh won his riding with 44.5% of the vote.
38th Canadian Parliament In the
38th Canadian Parliament, Dosanjh was appointed
Minister of Health in the
federal Cabinet. As Health Minister, Dosanjh strongly supported Canada's existing single-tier, publicly funded
health-care system. Dosanjh introduced legislation to make
cigarettes fire safe, new regulations to further limit lead content in children's jewelry, and supported an NDP motion to ban
trans fats. He advocated that Canada ratify the
World Health Organization Framework Convention on Tobacco Control, which they did in November 2004. Dosanjh funded a program to revise the Canada food guide to include more multicultural foods and another program to integrate foreign-trained medical professionals into the health-care system. Supported by a unanimous vote in the House of Commons, the government agreed to compensate the 6,000 Canadians infected with
hepatitis C from tainted blood transfusion. Along with Prime Minister Martin, a 10-year, $41 billion funding plan was negotiated with the provinces to deliver health care – with $5.5 billion to specifically address wait times that had been an election issue during the 2004 federal election – but they rejected Premiers' demands for a national program to purchase pharmaceuticals in bulk. As the Minister of Health, Dosanjh introduced Bill C-12
An Act to prevent the introduction and spread of communicable diseases which updated the 1985
Quarantine Act; it was given royal assent in May 2005. In May 2005, opposition MP
Gurmant Grewal accused Dosanjh and the Prime Minister's
Chief of Staff,
Tim Murphy, of attempting to bribe him with an ambassadorship and a senate seat for his wife,
Nina Grewal, if he would
cross the floor or abstain from a crucial upcoming vote. Grewal released tapes he secretly recorded of the conversation between Dosanjh, Grewal, and Murphy. Dosanjh claimed innocence and accused Grewal of altering the tapes to imply wrongdoing and the Prime Minister dismissed calls to remove Dosanjh from cabinet. Audio analysis concluded that the tapes were altered and the
Royal Canadian Mounted Police did not pursue any criminal investigations. Nevertheless, fellow MP
John Reynolds filed a complaint with the
Law Society of British Columbia accusing Dosanjh of violating the
Criminal Code and the society's Professional Conduct Handbook. The Law Society reviewed the affair and concluded that Grewal had attempted to elicit rewards for his compliance but cleared Dosanjh and Murphy of misconduct charges.
39th Canadian Parliament In the
January 2006 federal election, Dosanjh decisively won his riding against Tarlok Sablok, the Indo-Canadian Conservative candidate, and the community activist and NDP candidate
Bev Meslo. With the Liberal party forming the
Official Opposition, Dosanjh became the critic for National Defence and sat on the Standing Committee on National Defence and the Standing Committee on Foreign Affairs and International Development. In the
December 2006 Liberal leadership race he supported
Bob Rae, a fellow former-NDP premier. When Rae was eliminated on the final ballot, Dosanjh supported
Stéphane Dion. With Dion as the new leader, Dosanjh remained on the two committees but his critic responsibility was moved to Foreign Affairs. Dosanjh suffered a mild heart attack on the morning of February 13, 2007, outside the House of Commons. He was attended by fellow MP
Carolyn Bennett, who is also a doctor, and he was rushed to hospital where a successful
operation to remove a
blood clot near his heart was performed. In the second session of the
39th Parliament, from October 2007 to September 2008, Dosanjh sat on the Standing Committee on Public Safety and National Security and the Special Committee on the Canadian Mission in Afghanistan, and his critic responsibility was moved Public Safety.
40th Canadian Parliament The
next election was called for October 2008. Dosanjh faced sociologist Wai Young running for the Conservatives, health worker Ann Chambers running for the NDP, and an IT consultant, Csaba Gulyas for the Green Party. Dosanjh won by 33 votes over Young, both receiving 38.4% of the vote. A recount confirmed Dosanjh's victory but only by a margin of 22 votes. The Conservative Party requested a second, judicial recount, which again confirmed Dosanjh as the victor. In the
40th Canadian Parliament, with his party once again forming the official opposition, Dosanjh was appointed the National Defence critic for the first parliamentary session which was short-lived. During the
2008–09 Canadian parliamentary dispute he defended the proposed coalition government as a reaction to inappropriate leadership on economic issues by the existing government. When Dion resigned as party leader, Dosanjh considered but did not run for leadership citing his inability to speak French and again supported Rae's bid. In October 2009,
Michael Ignatieff appointed Dosanjh as the
Liberals' critic for National Defence. When the
40th Parliament re-convened for its 2nd session Dosanjh continued as the National Defence critic and served on the Standing Committee on National Defence, as well as the Standing Committee on Justice and Human Rights, and the Special Committee on the Canadian Mission in Afghanistan. In the 3rd session of the 40th Parliament Dosanjh continued with the Standing Committee on National Defence and the Special Committee on the Canadian Mission in Afghanistan, but also sat with the Standing Committee on Health. In September 2010 he was reassigned to being the critic on health for the Liberal Party. Dosanjh introduced private member bill C-467
An Act to amend the Citizenship Act (children born abroad) in the 2nd session, and re-introduced it in the 3rd session where it received 2nd reading in September 2010, which would grant natural citizenship to children born to, or adopted by, Canadian citizens working for the federal government (including members of the Canadian Forces). ==Vaisakhi Parade controversy==