OTTAWA — An Austrian man who has been permanently banned from the United Kingdom for promoting extremist narratives said this week he hopes Canada won't deny him entry ahead of a conference he's set to speak at in Hamilton this month. Martin Sellner is being marketed as a keynote speaker for an Aug. 29 conference of the Dominion Society, which advocates for "remigration," the mass deportation of immigrants. Sellner was permanently banned in 2019 from entering the U.K. on security grounds. A U.K. government letter, which was publicized by Sellner's organization, said he posed a serious threat to the country's...