There were promises made to Hong Kong, at least in the Sino-British Joint Declaration, which is a treaty that's lodged at the United Nations and should be safeguarded by the Vienna Conventions—the law of the treaty—but the U.K. hasn't even raised an objection to it. None of the countries that are involved in that international law mechanism have ever done anything about the breach of the treaty.
There are a lot of things that could be done—as Katherine, Caoilfhionn and Luke have said—but one thing that hasn't been mentioned is this: I urge Canada to seek to find a solution with other allies, with the U.K., American and other governments, to Beijing's unilateral rejection of dual nationality, an invasive imposition of Chinese citizenship on anyone they believe to be Chinese, even on those who have already renounced their Chinese citizenship or children of those who were born outside of China. They have been claiming that people are not subject to consular access because they were, first and foremost, Chinese before they were Canadian or British citizens. This has been causing quite some problem in Hong Kong. I'm sure the Canadian government has encountered similar issues, not only in the context of Hong Kong but also in the context of prisoners in China who were denied consular access. We can't just roll over and allow Beijing to deny consular access and rights.
At the same time, I completely agree with everything that has been mentioned on the panel. There are so many things to be done—sanctions and so on—but talking about political prisoners and the situation in Hong Kong and China at all times, whenever there's bilateral or multilateral engagement, that should be a topic on the table. The Chinese government and the Hong Kong SAR government have been known to quit negotiations or conversations because these things were on the table, but that's exactly why you should insist on having those conversations: You can't just refuse to talk about different things just because you don't like it or you did something wrong.