The latest measure cleared the Senate by voice vote, but it was the product of days of fraught negotiations and false starts — and its success will be difficult to replicate as senators’ frustrations over the extended recess pile up.

McConnell said the Senate will proceed “cautiously” to the next phase of coronavirus relief despite rapidly escalating demands for more aid from members of both parties. And he said that all 100 senators need to be around before Washington spends more money on an unprecedented economic rescue of workers and businesses caught in the virus’ fallout.

“You’ve seen the talk from both sides about acting, but my goal from the beginning of this, given the extraordinary numbers that we’re racking up to the national debt, is that we need to be as cautious as we can be,” McConnell said. “We need to see how things are working, see what needs to be corrected, and I do think that the next time we pass a coronavirus rescue bill we need to have everyone here and everyone engaged.”