Mr Flanagan signed the exclusion order with immediate effect under Section 4 of the Immigration Act 1999 in respect of Pastor Anderson.
Online petitions were launched calling on the Government to ban fundamentalist American preacher Anderson from speaking in Dublin.
Anderson “has advocated exterminating LGBT+ people lauded the massacre in the Florida Gay Night Club of LGBT patrons and said he prayed nightly that US President Barack Obama would die!” He is also a Holocaust denier.