In the United States, the national restaurant industry association has been categorically in favour of it, although probably not for altruistic reasons. They saw a proliferation of menu labelling standards, which were all a little bit different in various municipalities—New York City in particular, Seattle, and others—and states, including California, and they were concerned that their members would have difficulty trying to comply with a bunch of different standards, so they were fully in support of it when it came time to supporting the Obama bill.
In Canada, the Canadian Restaurant and Foodservices Association is nominally in favour of it. They were members of the Sodium Working Group, and there was a recommendation about this there. But I know that in response to Madam Gélinas' bill in the Ontario legislature, they were opposed to it. There was a bill in Parliament a few years ago that they were categorically opposed to, and lobbied vigorously to kill, and were successful, unfortunately.