As he writes in yesterday's column, "Supreme Court should take on New York City’s rent control laws." He's writing about the Harmon case and the cert petition which the Supreme Court is currently considering:
Rent control is unconstitutional because it is an egregious and uncompensated physical occupation of property. The Constitution says that private property shall not “be taken for public use, without just compensation.” The Harmons get no compensation for being coerced into privatized welfare: The state shows compassion to tenants — many of whom are not needy; one of the Harmons’ entitled tenants owns a house on Long Island — by compelling landlords to subsidize them.
We've posted the cert petition and the amicus briefs in support (start here).