USAC has "Sanctioned" this event before.

I do not understand the connection. A lot of the cars would not meet todays spec's. They have roadsters and V6's which no longer are legal in USAC.

What is the benefit for Anderson Speedway to have USAC involved?

Is it cheaper to use USAC officals, timing and scoring than to use your own people? I would think that would be the only advantage.