Seems like posturing to get the DEMs to back off on an actual impeachment vote. As much as the experts on FR want this to go to trial in the Senate, the GOP Senators really want nothing to do with an impeachment trial. For most of them, there is little to be gained personally (we’re long past the point of answering to the constituents or the states).
I highly suspect that many in the GOP Senate have their hands in the Ukrainian Cookie Jar as well...............