There aren’t a lot of surprises on that list. It includes three of the most well-known Russia hawks in the Senate — Lindsey Graham of South Carolina, John McCain of Arizona and Marco Rubio of Florida — along with Cory Gardner of Colorado, one of the few Republicans to represent a state won by Hillary Clinton. There’s also Portman, Pat Roberts of Kansas and Ron Johnson of Wisconsin.

Three of those Republicans — Rubio, Gardner and Johnson — are members of the Senate Foreign Relations Committee, which will vote on State Department nominees before their names go to the entire Senate. Republicans will have just a one-seat advantage on the committee, so any GOP defections could potentially scuttle Tillerson’s confirmation.

Moreover, there’s a longer list of Republican senators, including several on the Foreign Relations Committee, who either signed the Ukraine letter or called for an investigation into Russian hacking but not both, suggesting that opposition to Trump on Russia could grow depending on how he manages the politics of the issue.