There are a number of policies that have been enacted over the years to drive up housing costs:

• Banking policy with a flood of credit has allowed borrowers to drive up prices using debt
• Immigration (illegal and excessive legal migration) has rapidly driven up demand
• Allowing foreign nationals/governments to buy up U.S. property
• Allowing hedge funds to buy up residential properties
• Excessive regulation and permitting drives up the time and cost of building new housing
• Excessive real estate speculation (often on credit and margin) drives up prices
• Excessive taxation deprives many people of their ability to afford housing
• Estate and property taxes push families out of homes they have built and paid for

It’s nice to see Trump addressing some of these. I hope he keeps on going.