Just imagine not being from the US, donating to Mozilla so they improve Firefox, and they instead spend the money on translating the USA presidential election.
A lack of focus generally hurts an organizations legitimacy in the eyes of it's donors.
Increasing the quality of a countries national elections isn't a goal I'd immediately assume to be part of Mozillas mission, so I'd be disappointed about such a project.
They could go the more transparent route and create a second organization for funding things their management likes.
... but I assume that such an organization would probably have some funding problems.
Maybe Mozilla should allow donors to specify the project they'd like to contribute to?
That would give them additional feedback on how the community evaluates their programmatic direction.