President-elect Donald Trump took aim at Canada, Greenland and the Panama Canal in a series of Christmas Day social media posts that suggested the U.S. could take control of all three.

In an interview with The Washington Post, Tom Homan, who oversaw the family separation policy as acting director of U.S. Immigration and Customs Enforcement in Trump’s first term, said that the next Trump administration will be holding families in detention centers and won’t hesitate to deport undocumented parents with U.S.-born children.