Dion announced his new shadow cabinet in January 2007, and reassigned Dhalla from Health to Social Development. She criticized the Conservatives for canceling the Martin government's national day-care plan, and spoke against the prospect of large, for-profit foreign firms taking over the industry. She also wrote an opinion piece for the "Toronto Star" newspaper in early 2008, calling for developed countries to invest the necessary resources to target tuberculosis in the global south. In Parliament Dhalla founded the HAT (HIV, Aids, Tuberculosis) caucus for parliamentarians of all political parties to bring greater awareness on the issues.