The issue is of particular concern to utilities in the Southeast, like Southern, which argue that there is simply not enough wind energy in the region to warrant a mandatory standard for renewables.

FORBES: Tilting At Windmills

It's a mandatory fuel standard.

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Once adopted as a standard, such devices become virtually mandatory because doctors can also be sued for not using them.

FORBES: Defensive Medicine

Auditing the Fed, replacing Fed monetary policy discretion with a mandatory price rule governing policy, even the gold standard, Nobel Laureate Friedreich Hayek pushed the envelope beyond all of these.

FORBES: Rethinking Money: The Rise Of Hayek's Private Competing Currencies

From 2015 EU countries have to ensure their beaches meet at least the "sufficient" standard, which is a step up for the existing mandatory level.

BBC: NEWS | UK | England | Devon | Concern over who pays for beaches