Gov. Jerry Brown's response to the DOJ immigration lawsuit, included a worn out claim that CA is the "economic engine" of the country. In FY 2015 federal tax revenue from CA was $10,408 per capita and 16.6% of the Gross State Product was paid in federal taxes.

National averages for FY 2015 were $10,234 per capita and 18.3% of GSP. So on a per capita basis, there is not anything special about the economic contribution from CA.

en.wikipedia.org/wiki/Federal_tax_revenue_by_state

In 2016, CA was eighth in the country for per capita GDP (Gross Domestic Product). CA has a lot of people, but there is nothing special about their productivity. www.statista.com/statistics/248063/per-capita-us-real-gross-domestic-product-gdp-by-state/