WASHINGTON — Melania Trump has made another secret trip, though this one was carried out closer to home.

The first lady is visiting wounded service members at Walter Reed National Military Medical Center. She traveled to the Washington-area hospital on Tuesday morning for a visit the White House did not publicly announce until after she arrived.

Stephanie Grisham, the first lady's spokeswoman, tweeted that Mrs. Trump was visiting with "combat injured service members & their families."The Walter Reed stop follows back-to-back secret trips by the first lady to the US-Mexico border in recent weeks to visit with migrant children who have been separated from their families under the president's illegal immigration crackdown.

The first lady also spent five days as a patient at Walter Reed following kidney surgery in May.

AP