In the case below, one wonders if the lede is buried so deep that it cannot be found at all. Perhaps the real message is that adding to enrollments without sufficient additional funding is the cause of the shortage.
From the Bruin:
Some graduate students teach undergraduate courses outside of their departments because of a shortage in teaching assistants.
There has been a teaching assistant shortage in divisions like life sciences and physical sciences because the undergraduate student population has increased faster than the graduate student population over the past few years, said Victoria Sork, dean of the life sciences division.
She said that because of this deficit, some TAs from the engineering and public health departments, which have fewer undergraduate classes and subsequently fewer teaching positions, have begun instructing courses in the life sciences...