WASHINGTON (AP) - Two congressional committee chairmen say they plan to see if there were broader motives behind a Veterans Affairs Department employee's e-mailed suggestion to diagnose veterans with mental disorders that have a lower disability payout.

The VA has identified the sender as a post-traumatic stress disorder team leader at the VA medical center in Temple, Texas.

The e-mail suggested that a straight-out diagnosis of PTSD (post traumatic stress disorder) not be given because there are ``more and more compensation-seeking veterans.''

A recent Rand Corporation study found that about one in five troops who served in the recent wars have symptoms of major depression or post-traumatic stress disorder.

Lawmakers are also looking into whether military suicides are being covered up.