Sen. Kamala Harris (D-CA) rolled out a plan to offer grants up to $25,000 to low-income black individuals to help with a down payment and closing costs on home purchases.At first glance, to the economically uninformed, this seems like it's a good idea. We want as many people as possible to own homes for many obvious reasons.Why not subsidize low-income buyers with a $25,000 grant? This would mean that it would be easier to buy a house in a low-income area. The more houses that are bought, the higher the demand, and prices will rise, benefitting everyone.But as with all...