Friedrich Trump was expelled from Germany in 1905, apparently because he had emigrated illegally. He and his wife, Elisabeth Trump, returned to the United States when she was pregnant with Fred Trump, the president's father, according to The Post's reporting and Blair's book. So about the only way you could say Trump's father has claim to the German homeland is that he may have been conceived there.
Trump was perhaps using the claim to express solidarity with the man he was sitting next to Tuesday at the White House, NATO Secretary-General Jens Stoltenberg. The previous two times Trump made this claim were also while talking about US-European relations.
In July, Trump named the European Union as one of the United States' biggest foes. "Maybe the thing that is most difficult - don't forget both my parents were born in EU sectors, OK?" he said. "I mean, my mother was Scotland, my father was Germany. And - you know I love those countries."
Trump's mother was a Scottish immigrant.
And just days before, he made the same claim at a NATO summit in Brussels. "I have great respect for Germany; my father is from Germany," Trump said. "Both of my parents are from the EU, despite the fact they don't treat us well on trade."