In cities where you need to earn the kind of money it takes to buy a $1 million house.
Come to Trump country and you can buy five very nice houses for that money.
Not if everybody comes. It's only fear of you scruffy-bearded, MAGA hat wearing, AR-15 wielding yahoos that keeps your prices under control. :)
Here in Arizona we had reasonable prices for a long time, but then Californians figured out that the heat stories were mostly tall tales and it was a great place to escape from the crazy prices in their home state. Prices have more than doubled since the post-housing crash lows.