Florida U.S. Sen. Marco Rubio has proposed an amendment to a broad package of legislation to counter China that aims to shield research and development boosted by a massive infusion of cash from threats of espionage or theft.

The change being sought by the Florida Republican to a package of bills based on a proposal from Senate Majority Leader Chuck Schumer and Indiana Republican Sen. Todd Young offers a preview of the sort of skirmishing that is likely to erupt as Schumer pushes for floor passage of the legislation by the end of the month.