According to one source, Flake wants to spur discussions on travel restrictions to Cuba as well as issues related to tariffs.

“We’re discussing it,” the Arizona Republican said in a brief interview with CNN as he came out of an immigration negotiation.

Flake sits on the Judiciary Committee, where Republicans have a slim 11-10 advantage over Democrats. If he does not relent, he could bring the work of the powerful committee to a halt as it applies to appellate court nominees, who are often voted out on party lines.