But they have been linked to contamination and illness in the past, and proposals to more tightlyregulate the industry practice have been debated in Congress.
In this respect, we need to heed one of the lessons of this Hall: it will do no good to tightlyregulate a market only to see the bulk of activity flee beyond our reach.
Curiously, for their part, environmentalists expect to be able more tightly to regulate the oceans and to bar activities that endanger the health of their waters, flora and fauna, such as drilling and mining.
Because public companies sell shares to the unsophisticated, policymakers are right to regulate them more tightly than other forms of corporate organisation.
In the 1974 law, Congress had tried to set up a tightly controlled system for financing campaigns: the government would monitor and regulate both the inflows and the outflows of money.