I think the OP would be wise to read up on some relatively recent history. During the Nixon administration, they came up with a terrific idea to counter inflation: Pass a law against it. This became known a
Nixon's Wage and Price Controls. The basic idea was simply make it illegal for anyone to raise their retail prices and make it illegal to increase wages. A simply concept that was an unmitigated disaster for the economy.
If I have a mortgage on a house that I want to rent, I have to know how much I need to charge in rent in order to make it financially feasible to do so. If I have to rent to someone who can't meet my minimum requirements, I can't rent it. And, if I do rent it to someone, and their income goes down, do I also have to lower their rent accordingly? My mortgage obligation isn't going to change, is it? The bank is still expecting the agreed upon payment, right? If a landlord cannot predict how much rent he will collect in any given month based on your OP scenario, rental properties would be a terrible investment.
The fed tweaking interest rates (making it more or less expensive to borrow money) is pretty much the extent that the government ought to be involved in manipulating the economy.