"They will have to prove their indictments to independent people, who demand better evidence," he said.

Several years ago the bureau was granted the right to demand evidence in some drug cases without subpoenas.

The theoretical advance demanded further physical evidence which simply could not be collected with the technology then available to researchers.

He demanded scientific evidence that a program could work before committing money to it.

But Administration officials said the budget office demanded more evidence to show the benefits of protecting ground water for future generations.

On the other hand, naval appointments demanded, in addition, evidence of competence.

And doctors generally demand strong evidence, if not proof, before they radically change a standard therapy.

And it demands evidence that teacher candidates actually can teach.

As president, I will ask the hard questions and demand hard evidence.

The law demanded evidence and due process, but provided little to make things right.