As Senate Minority leader, he is responsible for assigning members to serve on various committees.
In addition, since there is really no reason for any Republican to even show up at the dimocrat controlled meetings, the other Republicans on the same committees as ‘the three rinos’, should refuse to serve on any committee that they are on.
The Founders set up this system for a reason, refusing the participate in the legislative process and sitting out elections in order to get your way is not what they had in mind!!!