From an NYT editorial:

It was almost inevitable that a combination of $4-a-gallon gas, public anxiety and politicians eager to win votes or repair legacies would produce political pandering on an epic scale. So it has, the latest instance being President Bush’s decision to ask Congress to end the federal ban on offshore oil and gas drilling along much of America’s continental shelf.

This is worse than a dumb idea. It is cruelly misleading. It will make only a modest difference, at best, to prices at the pump, and even then the benefits will be years away. It greatly exaggerates America’s leverage over world oil prices. It is based on dubious statistics. It diverts the public from the tough decisions that need to be made about conservation. ...

... The Congressional moratoriums on offshore drilling were put in place in 1981 and reaffirmed by subsequent Congresses to protect coastal economies that depend on clean water and clean coastlines. This was also the essential purpose of supplemental executive orders, the first of which was issued by Mr. Bush’s father in 1990 after the disastrous Exxon Valdez oil spill the year before.

Given the huge resources available to the energy industry, there is no reason to undo these protections now.