The level of the cancer agent tetrachlorethylene used for cleaning semiconductors at one of the plants was 9, 400 times the permissible limit.

ECONOMIST: Toxic waste in Japan

If teachers across the system pushed their marks to this permissible upper limit, it would see an increase in marks which would not be detected by the moderation process.

BBC: Heads doubt Ofqual's claims on GCSE English

This was why the Court concluded that it was permissible for the law to limit how much an individual could contribute to any particular campaign.

NEWYORKER: Money Unlimited

While some limit on magazines may be constitutionally permissible, one that falls below the capabilities of guns in common usage for self-defense is probably not.

WSJ: David Rivkin and Andrew Grossman: Gun Control and the Constitution