Ivanka Trump is thanking her father, US President Donald Trump, for signing an order ending a policy which saw children separated from their families at the US-Mexico border.
"Thank you for taking critical action ending family separation at our border," she tweeted.
"Congress must now act and find a lasting solution that is consistent with our shared values; the same values that so many come here seeking as they endeavour to create a better life for their families."
Mr Trump signed the executive order on Thursday (NZ Time), which reads: "This Administration will initiate proceedings to enforce this and other criminal provisions of the INA until and unless Congress directs otherwise.
"It is also the policy of this administration to maintain family unity, including by detaining alien families together where appropriate and consistent with law and available resources."
It also states that the Secretary [of Homeland Security] will not detain an "alien family" together if the parents of the "alien child" pose a risk to their welfare. Other children will still be detained, but it will be with their families.
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The move comes just weeks after Ms Trump tweeted a photo of her cuddling her two-year-old son, just as news was emerging that young children were being taken from their parents by US border agents.
The photo caused an uproar on Twitter, with one user tweeting: "I wish you would just have the courage to tell us what you really think about the #MissingChildren No mother could possibly think what they're doing is OK. Could you?"
Another said:" "Personally I found this to be offensive when #WhereAreTheChildren is on everyone's mind."