You asked what Canada could do. I come back to my earlier recommendations. The Canadian government can communicate with the Cuban and American government in an effort to restore bilateral relations. There are ways of doing this.
I would remind you that Bill Clinton was opposed to the 1996 Helms-Burton Act. He was forced to change his tune because of the pressure brought to bear by Cubans living in Miami. Bill Clinton didn't want the legislation, but he gave in because he wanted to be President of the United States.
Canada can encourage the U.S. government to do away with its hostile policy toward Cuba. Furthermore, even the special rapporteur on human rights, Christine Chanet, clearly stated in her report on human rights in Cuba that the prevailing tense climate is far from conducive to the development of civil and political rights in that country. I'm not saying that this is the only cause, and I do not approve of every single decision made by the Cuban government with regard to political prisoners, but there is a context.
Earlier, with regard to the example that I gave, you said that this did not apply here because this is a democratic country and therefore, this is not an issue. Again, I would remind you that Cuba's situation is unique and, unfortunately, even if the Cuban government wanted to allow all its citizens to do whatever they wished, it would be hard pressed to do so. Like any government under siege and under an embargo, it fears major political destabilization.