The John F. Kennedy Presidential Library and Museum in Boston was forced to close Tuesday due to the “sudden dismissal of federal employees,” the library’s foundation said in a statement to CNN.

Most of the JFK Presidential Library and Museum workers who were suddenly let go by the Trump administration this week made less than $60,000, the Herald has learned. The five federal employees who were laid off on Tuesday following a President Trump executive order worked in admissions and in front-of-the-house roles at the historic Dorchester site.

The library closed abruptly Tuesday, with visitors escorted out of the building after the Trump administration ordered the institution to fire critical employees.