Ken Ham, founder of Answers in Genesis, was disinvited from speaking at two homeschooling conferences because organizers felt he made “unnecessary, ungodly, and mean-spirited” remarks about the conventions and other speakers. Specifically, Ham accused Peter Enns, a senior fellow of biblical studies at the BioLogos Foundation based in San Diego, of not believing in a literal Adam and Fall. He also takes issue with Enns’s belief that sin should not be discussed with young children because it would cause problems with their view of God. 
In the past thirty years or so, various "evangelical" scholars and institutions have been moving away from traditional Christian doctrines concerning the nature of Scripture, and adopting views which are not essentially different from those espoused by liberal churchmen of the late nineteenth century. Peter Enns comes from this liberal theological viewpoint. Subsequently, BioLogos Foundation believes that evolution, when understood properly, “best describes God’s work of creation.” BioLogos does not believe in young earth creationism, which Ham’s apologetics ministry Answers in Genesis does. Young earth creationism interprets the Genesis story of creation to mean that God created the Earth in six, 24-hour days.
In Brannon Howse style, Ham had made presentations on how Peter Enns was promoting unbiblical teachings and compromising the faith. He pointed out how Enns' curriculum totally undermines the authority of the Word of God.  He also pointed out that Peter Enns had connections to another speaker, Susan Wise Bauer, whose company, Peace Hill Press, publishes his Bible curriculum.
The Advisory Board of Great Homeschool Conventions believes Ken’s comments to be unnecessary, ungodly, and mean-spirited statements that are divisive at best and defamatory at worst,” the homeschooling group wrote, however, that it is “100% young earth” in its scientific stance.
Although they make these claims, Ham was disinvited from the Great Homeschool Conventions in Cincinnati, Ohio, March 31-April 2, and the one near Philadelphia, Pa., June 23-25.
Ham's Facebook page reads:
"Someone needs to stand against the compromise that is pouring into the church from many directions. ...Because we publicly exposed one of their speakers and his curriculum, because his beliefs clearly undermine the authority of Scripture, we apparently come under the heading of 'anti-Christian' in our actions." 
"Now I beseech you, brethren, mark them which cause divisions and offenses contrary to the doctrine which ye have learned; and avoid them. For they that are such serve not our Lord Jesus Christ, but their own belly; and by good words and fair speeches deceive the hearts of the simple."
Thank you, Ken Ham, for being a defender of the faith!