His comments to the hard-right Alternative for Germany party escalated efforts by the billionaire to influence the countryβs election for chancellor next month.
Responding to the killing of a child, the poll-leading Christian Democrats are pushing to overhaul migration laws β possibly with votes from the Alternative for Germany.
In a barrage of posts rife with misinformation, he revived questions about a child sex abuse scandal, vilified the prime minister and defended a jailed far-right agitator.
The worldβs richest man, a key adviser to President-elect Donald J. Trump, ridicules critics over his backing of the German extremist party AfD, as Germany prepares for elections.