Secretary Powell told senators that conditions would only clutter the treaty.
"No proposal is going to keep everybody happy," he told Republican senators at a luncheon meeting.
"When we return to flight, it will be with essentially a new vehicle," he told senators at his confirmation hearing in April.
He urged Americans to tell their representatives and senators that that they had "a historic opportunity" to pass health care legislation.
But last month, another manager told senators to disregard the standards of proof required in a criminal case.
If we are to progress as a country, he told senators, "we better put science right at the center of our decision-making.
He told senators at a confirmation hearing in 1989, "I had other priorities in the 60's than military service."
"I'm under no illusions that it will keep everybody happy," he told Republican senators at a luncheon meeting.
"The new electoral law must guarantee governability and continuity in politics," he told senators on Wednesday.
"I don't see myself as running some kind of super embassy," he told senators.