Issues that fly under the radar

In an interesting examination of why some "controversies" soak up all the media attention while others are nearly invisible, Scott Sumner lists seven policies that, in his experience, no one has ever heard of.

1. Federal coastal flood insurance.
2. Zoning laws forcing the construction of parking lots.
3. Restrictions on taxi medallions.
4. Quotas on sugar imports.
5. Huge urban/rural water price differentials.
6. Restrictions of the ability of foreign air carriers to serve US markets.
7. Occupational licensing restrictions where there is no public policy purpose.

I drew a blank on 2., 5., and 6.