Tom Daschle did the same thing when he was Minority Leader. The problem in the Senate is that stupid 60 Vote Rule to bring legislation to the floor for a vote. Senator’s in the majority are fearful of doing away with the rule because they know they will be back in the minority someday.
If McConnell wanted these bills to get to the floor, he would do as Harry did, go nuclear. The pubbies all said at the time payback is a bitch (paraphrased of course). Not looking so bitchy from here.