But they can control regulation.

There are many different ways to address these from a public economics perspective including emissions fees, cap-and-trade, and command and control regulation.

Later in that decade, emission control regulation had a major effect on improving the cities air quality.

The emphasis was on social equity, with water resources state owned and centrally regulated through command and control regulation.

New changes to capital control regulations, unveiled yesterday, allow residents to buy foreign exchange more freely and up to a limit of $20,000 a year.