In budget 2017, there was a measure on the disability tax credit to add nurse practitioners to the list. That was legislated as part of the first Budget Implementation Act. What's being added here is an extension of that. There are certain other provisions in the Income Tax Act whereby specified medical practitioners can certify different things.
Let me give you an example. For the child care expense deduction, normally it's the lower-income spouse who's eligible to claim the deduction, but where the lower-income spouse has a severe impairment, then in that case the higher-income spouse is able to claim the child care expense deduction. It's a question of who can certify that status, so nurse practitioners will be added. It's taking that logic and extending it to some other parts of the income tax system.