House Speaker Mike Johnson (R-Louisiana) is privately expressing his frustrations with uniting his caucus as a possible government shutdown looms next week. Politico reported recently that Johnson warned his fellow Republicans that a partial shutdown of some federal agencies may be forthcoming if certain intransigent members of the House Republican Conference don’t acquiesce to not getting their way in current negotiations. “Some members in our conference said it was as OK to take down a rule,” Johnson said, referring to some Republicans who are now routinely blocking an initial procedural hur…