Republican nominee Donald Trump appeared by phone on Fox News' "Fox and Friends" Tuesday morning to discuss the final day of the election campaign and used the opportunity to praise his children.

While he said he was very proud of his three older children, he included a caveat about his daughter Tiffany, who was born to Trump's then-mistress, Marla Maples.

"I'm very proud, because Don and Eric and Ivanka — and you know, to a lesser extent because she just got out of school, out of college— but Tiffany who has also been so terrific.  They work so hard," Trump told the hosts.

Trump has drawn criticism in the past for what some call favoritism toward his other children, namely Ivanka.