The Republic of California did not include all of San Diego, Tijuana, or the other major cities around them upon original formation. Those cities had fallen into civil war as the Mexican Drug Lords took advantage of the Second Great Depression to shatter the local governments’ internal controls. There were numerous military bases in the area though, including the largest American port on the western coast. They served as good bases for security and police forces to operate from, but a lack of Federal funding greatly reduced their reach. It was the wild wild west outside their security corridors, and Republic forces tried very hard not to spend much time in them. Note that there were a number of military housing neighborhoods that were basically extensions of the bases, and the Drug Lords did not enter those areas. Well. They didn’t enter twice. And those who wanted to live learned from the examples of those who tried once and didn’t walk in their very bloody shoes.