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.

The JFK Library in Boston abruptly closed on Tuesday due to an executive order by President Trump, a library spokesman said.

John F. Kennedy’s only grandson returned to social media on Tuesday to throw a fit over the closure of Boston’s JFK Presidential Library and Museum—a move the institution said was due to a recent executive order signed by President Donald Trump.