The central problem is the bread and butter of Fermilab, operating an accelerator to push the frontiers of physics, is reaching its limit. At some point one must admit the place has discovered what it's going to discover and decide to shut the place down.
This problem is facing particle physics as a whole, world wide, since accelerators have become increasingly expensive as the needed energy has increased.
This problem is facing particle physics as a whole, world wide, since accelerators have become increasingly expensive as the needed energy has increased.