Canada has led the way in North America, authorising same-sex marriage and adoptions in June 2005. In the United States, a Supreme Court decision in June 2015 legalised gay marriage nationwide.
Ivanka, whose husband Jared Kushner also works as a senior aide to the president, will not receive a salary for her work as a federal employee. Kushner, a real estate developer, is also unpaid.
Tunisian Anis Amri, 24, is believed to have hijacked a truck and used it to mow down holiday revellers at a Berlin Christmas market on Monday, killing 12 people in an attack claimed by the Islamic State group.
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