In the most recent edition of Contributions Magazine, here's a great article by Tom Ahern: On the Delicate Subject of Committee and Board Approvals.
Why do people who know nothing about fundraising have approval authority over fundraising messages?
... we often cede the weighty responsibility of "blessing" fundraising communications to higher authorities: boards, committees, the executive director. That's irresponsible. Uninformed opinions and second-guessing can, without malice or intent, easily ruin competent work and undermine your ability to raise money. When untrained people have the final say on what goes out the door, you run a serious risk.
I'd say "risk" is an under-statement. When you put non-experts in charge, you have near-certainty of bad results.
This may be the top cause of ineffective fundraising.
There are right and wrong ways to do fundraising, and a surprising number of the right ways are counterintuitive. When you ask your board or director to comment, all they have to offer is their intuition. And their intuition is wrong.