To start with your last question first, inflation and rental prices are, in many cases, directly governed by provincial governments, so what they say goes, in terms of the increases that are allowed in those markets.... In that sense, caps already exist in those areas insofar as the provincial policy says so and says whether or not there are new units—and there is a variety of exceptions to that. This doesn't help you in the sense that this is provincial government policy, not federal government policy, but it is one area where governments do have a direct influence over the consumer price index.
The purchase of housing is another one, and things like tuition and child care fees are other areas where governments fairly directly set prices that consumers pay, and those are part of the consumer price index.
When it comes to other levers that could be pulled to discourage investors but continue to allow the market to be open to homeowners, changing the premiums on CMHC insurance is another way.
I would encourage members to consider tamping down on investors in particular, in that what you're attempting to do is to get speculation, or some of the speculation, out of the markets in the hopes that this moderates or even reduces prices. It will not directly impact homeowners in the same way that an overnight rate of 3% would as the Bank of Canada increases its rates. The overnight rate affects everybody, and without keeping inflation under control with measures that the federal government can take, what's going to happen is that the Bank of Canada will act and drive interest rates for everybody—homeowners and investors alike.