When Sens. John McCain, R-Ariz., and Ben Sasse, R-Neb., came out against Robert Lighthizer’s nomination for U.S. trade representative, it was billed as a Republican rebellion against President Trump on trade.

“Beyond your vocal advocacy for protectionist shifts in our trade policies, the administration’s ongoing, incoherent, and inconsistent trade message has compounded our concern,” the two senators wrote in a letter.