US first lady Melania Trump is visiting an immigration centre in the Arizona city of Tucson.
The visit is her second in a week to see the conditions where people, including children, are kept after entering the US illegally.
It was reported that Mrs Trump had pushed her husband to end the practice of separating migrant families, amid outrage over footage showing the children crying and being kept in cages.
Spokeswoman Stephanie Grisham said: “She’ll continue to give her husband her opinion on what her thoughts are on family reunification.”
In Tucson, Mrs Trump had a roundtable discussion with Border Patrol, Immigration and Customs Enforcement, the US Marshals Service and a local rancher for insights into the situation on the ground.
There was no mention of her meeting the people being kept at the facility.
Her first visit – to a centre in McAllen, Texas – was overshadowed by the coat she wore.
She was pictured wearing a parka with the words “I really don’t care. Do U?” while getting out of her car at Andrews Air Force Base.
It was removed before she disembarked in Texas and was not seen again.
More than 2,000 children have been taken away from their parents at the US border with Mexico, under the Trump administration’s “zero tolerance” immigration policy.
They were placed in government-contracted shelters, some of them hundreds of miles from where their parents were being held.
Donald Trump last week signed an executive order to halt the separation of families at the border, at least for a few weeks, but the order did not address the reunification of families already separated.
On Tuesday, a federal judge ruled that the children must be reunited with their parents within 30 days – or 14 days if they are younger than five.
Judge Dana Sabraw’s decision came as 17 states sued the Trump administration over its immigration policy, arguing that they are being forced to shoulder increased child welfare, education and social services costs as a result.