The first lady herself chose to visit the facility, according to her spokeswoman Stephanie Grisham. On camera a Customs and Border Patrol agent told the First Lady "there have to be consequences" for those families attempting to enter the US, often to seek asylum.
Melania Trump showed up to a shelter for immigrant children but her choice of fashion sparked the ire of many in the mainstream media and popular culture.
Melania Trump visits the Upbring New Hope Children Center run by the Lutheran Social Services of the South in McAllen, Texas.
ABC's Lauren Pearle and Justin Doom contributed reporting to this article.
Melania Trump donned sneakers, white trousers and a black sweater.
GE Reshuffles Its Full Portfolio: Baker Hughes Will Go
General Electric has found a way to tell investors some good news as it leaves one of the most famous stock indexes in the world. Mr Flannery said that the changes would make the company "simpler and stronger", and accelerate growth across its businesses.
Grisham told reporters on Thursday that the first lady is "anxious to learn how they're implementing the new process", adding that the court case "threw a wrench in the works".
Defense Secretary James Mattis said Monday the Department of Defense will build tent camps at two USA military bases in Texas to house people who attempt to cross the border illegally.
Anticipating a possible trip to Phoenix, protesters also gathered outside a Southwest Key facility in the city's west side.
During his speech, Sessions bristled at critics of the administration, which has stoked outrage for separating children from undocumented immigrant parents at the border, and he cast opponents widely as "open borders advocates" who complain "no matter what we do".
Mr Trump issued an executive order to end the family separations on June 20, but the government has yet to reunite about 2,000 children with their parents.
A federal judge ruled Tuesday that separated families must be reunited within 30 days; 14 days if children are younger than 5. The order poses logistical problems for the administration, and it was unclear how it would meet the deadline.