But one official said: "The President would cooperate if the Senate initiated an investigation," adding, "But we're certainly not going to initiate it or press for it."

For over four years now, the President has cooperated in every possible way with the investigation of the Independent Counsel.

During the past four and a half years, the President has cooperated extensively with this investigation.

He joked: What if a U.F.O. lands on the White House lawn and its occupants order the President to cooperate?

According to the Constitution of Croatia, the President of the Republic and the Prime Minister cooperate in directing the operations of the security services.

Recounting his own role in the Iran-contra affair, the President emphasized that he had encouraged the investigations of the affair and cooperated fully with them.

"The President and the First Lady have cooperated fully with this investigation," Mr. Davis said.

The next President should cooperate more closely with Congress, he said.

The President of Croatia and the Government cooperate in the formulation and implementation of Croatian foreign policy.

The President has cooperated every step of the way, providing hundreds of thousands of pages of documents to the committee, to the independent counsel and to the Tower board.