It is effective. They push 100 miles in every direction, then only lose half in a clawback. Sometimes when there is a Uniparty situation (wink wink) there is ZERO clawback for a time. Check & balance each day, week, month, year or decade, it always happens, but is DRAMATIC in times like this. A constant Centrist negotiation would be much more desirable.
But for GREED !