Ivanka Trump has broken ranks with her father's administration over its handling of immigrant families coming into the US.
The US had been separating children from their parents because children cannot be kept in adult prisons.
Trump, who is a senior adviser of her father Donald Trump, told Axios that seeing desperate mothers and their children separated was "a low point for me", especially as the daughter of an immigrant.
"I feel very strongly about that, and I am very vehemently against family separation and the separation of parents and children," she said in an event at the Newseum in Washington.
"Illegal immigration is incredibly complicated. I am a daughter of an immigrant. My mother grew up in Communist Czech Republic. But we are a country of laws. So you know, she came to this country legally," she said.