Even as Mr. Trump was back to criticizing free-trade deals in a speech in Pennsylvania on Tuesday, Republicans were dipping their toes back in the topic.

In a radio interview in his home state of Wisconsin, the House speaker, Paul D. Ryan, a longtime and vocal proponent of free trade, suggested that the United States and England needed to make a bilateral trade agreement once the country formally separated from the European Union.

“We would probably want to put together our own trade agreement with Great Britain, which would be easier to do, actually,” Mr. Ryan said. “I think we should make sure that our trading relationship is stable, so that our respective economies are not affected but actually improved.”