One way of doing that is to institutionalize the valuable propositions that result from his visit, so that they don't remain pure rhetoric. Some good news is that the California Legislature is focused on creating regulation on the remittance money that Mexicans send back home. The strengthening of economic and commercial ties could create better opportunities that help to resolve the topic of immigration. Commerce between Mexico and California has to reach its potential. Much can be done here.
Today is a good time to start.