Is that the county???
I know Chula Vista is in between San Diego and Tijuana...
district 8 is part of san diego its a strange situation.
https://www.sandiego.gov/planning/programs/mapsua/map
Chula Vista is still “san diego” COUNTY.
Any tunnel that goes north into california from tijuana geographically has to go to San Diego...
Before there were border issues. I used to walk back and forth between Tijuana and San Diego, sometimes multiple times each weekend.
things were different 45-50 years ago.