They are attempting to circumvent their Constitutional Duty.
Treaties are to be approved by a 2/3 majority. If they pass this “procedure” they hand over the right to object, add amendments and allow it to pass on a 51 vote Majority in the Senate.
If they want to change the rules do it the Constitutionally prescribed way. Amend the Constitution! They won’t because they know it would never get thru the states.
Weak, cowardly way of stifling the Voice of the people they are supposed to represent.
I’ve also read that it would take 60 votes to defeat a proposed package. And no amendments would be allowed. Up or down.
This binds Congress in a manner to which they wouldn’t be caught dead voting for if it were something else. It gives a tyrant free reign and makes the bar for dissent all the much higher.