Under a 1980 law, drilling cannot occur in the refuge without explicit Congressional approval.

At its most formal, the editor may republish the article with explicit approval.

Colorado defeated a proposal that would have required explicit approval from the voters for any state or local tax increase.

Today, music you can download for free, with explicit approval of the creators.

Shadow cabinet members were banned from making any pledge without his explicit approval.

Each and every use would require the explicit approval.

More broadly, must all decisions require explicit public approval?

On the other hand, there is a price to be paid if deregulation takes place without the explicit approval of Congress.

Military action does, of course, require the Security Council's explicit approval.

So the assumption is 'no' unless explicit approval is given.