kick at an open door

kick at an open door (third-person singular simple present kicks at an open door, present participle kicking at an open door, simple past and past participle kicked at an open door)

1. (idiomatic) To carry out a redundant activity.
   • 2010, Derk Jan Eppink, Bonfire of bureaucracy in Europe:

     Instead of making hard choices and hard decisions, the EU prefers to kick at an open door. By opting for easy policies, everyone agrees — simply because there is nothing to disagree with.