 LDI is endorsed by Alan Keyes, who referred to LDI as, "a cutting edge approach to spreading the message of the pro-life movement"; Joseph Scheidler of Pro-Life Action League, who says, "I appreciate everything Life Dynamics does"; Judy Brown of American Life League, who praised LDI for "aggressiveness" and "accuracy"; Dr. Jack Willke of Life Institute and International Right to Life Federation, who calls LDI "a spear carrier"; and Father Frank Pavone of Priests for Life, who appears regularly on LDI's" LifeTalk" program.LDI has been criticized by Dr. Warren Hern, an abortion provider in Boulder, Colorado, who said, "we cannot underestimate the determination of Life Dynamics to destroy us".Vicki Saporta, executive director of the National Abortion Federation, said of LDI in 2000, "This is an organization that should be investigated for some serious illegal activity".