Like Herding Cats

The idiom “like herding cats” is used to describe the great difficulty of trying to organize or get multiple people, who have complex, diverse, and potentially competing goals, to all move in the same direction in order to accomplish a goal or reach an agreement.Just in case you did not already know, it is extremely difficult, if not impossible, to herd cats.

Example:

The trial lawyers, the hospitals, and the insurance companies are never on the same page when it comes to addressing the high cost of health care. Trying to get them to agree on a plan is like herding cats.