Even proponents of the programs have acknowledged that there has been only limited research on their effectiveness.

Opponents note that the bill's proponents have not even acknowledged these costs, let alone estimated them.

Proponents acknowledge that the data is limited to a handful of campuses.

Proponents of the new measure acknowledge that it is a compromise and may face legal challenges.

Proponents acknowledge that winning approval in Albany would be a long shot.

Yet proponents acknowledge that some providers of mental health care are wary.

Even the proponents of satellite access acknowledge that the technology presents serious challenges.

At a news conference here, proponents of the plan acknowledged that this project alone would barely make a dent in the county's housing crisis.

But even avid proponents of truth commissions acknowledge that they are a complex and contradictory business.

To be sure, the proponents had openly acknowledged the risk of approving such a vaguely defined plan.