What do you think will happen if-

[AggregateDemand]

Legal marijuana wouldn't change much as long as the regulations were appropriately restrictive. The industry is pure vice so I don't have any particular qualms about restricting access to advertising media, especially public space and communication. The big change with legalization of marijuana would be the legalization of hemp, which could undermine the cotton economy and certain types of synthetic fibers.

Abortion being generally illegal would be a mistake. If abortion prohibition were mixed with the modern welfare state, bedlam would erupt, imo.

Social Security privatization is not advantageous for anyone, as forced contributions to private retirement are basically Wall Street's wildest fantasy, not optimal public policy. SS/MED need to switch to defined contribution plans, like the rest of planet earth, not defined benefit plans that give seniors incentives to kill off their progeny for cushy benefits.

Cap and Trade would be a disaster. The man who invented cap and trade said it would be a disaster, and warned policy wonks against creating artificial markets for to price negative externalities. It's only a thing because Obama is from Chicago, home of the mercantile exchange where carbon credits would be traded. It was nonsense from the get go.

Flat marginal tax is a matter of fundamental human rights. Our obsession with the "fairness" of graduated progressive tax rates shows that we are uneducated, unimaginative, intellectually rigid, and deserving of the socioeconomic rancor we create with overly complicated unfair tax codes.