Why was the Kennedy Presidential Library closed while the Nixon Library remained open?

Elon Musk and Donald Trump made the decision to close the presidential library of John F. Kennedy, an assassinated Democratic president. In contrast, the Nixon Library in Yorba Linda, California remained open despite Richard Nixon being the only president forced to resign while facing accusations of criminal misconduct in the Oval Office. This contrast highlights a political dimension to the library closures, as the Democratic president's memorial was targeted while the Republican president's library - even one who resigned in disgrace - continued operations normally. The situation reflects broader political dynamics affecting how presidential legacies are preserved and presented to the public.