The former US First Lady Laura Bush has condemned a controversial policy that splits up families who illegally enter the country.
Writing in the Washington Post, she describes the separation of children from their parents as cruel, immoral and heart-breaking.
Her comments follow growing controversy over President Donald Trump’s “zero-tolerance” immigration policy.
Earlier Melania Trump made a rare statement expressing concern.
Mrs Trump “hates to see children separated from their families”, her spokeswoman said.
In a recent six-week period there were nearly 2,000 family separations following a crackdown on illegal border crossings.
Adults who try to cross the border outside of official entry points – many planning to seek asylum – are placed in custody and face criminal prosecution for illegal entry.