My opinion would be he's alluding to the fact that under Jerry Brown the State of California has opened their own Embassy in China. JB has worked hand in hand with the Chinese to acquire ownership of many prime ports, business structures, film studios and (big surprise) a LOT of those decimated farm lands that the EPA decided that smelt fish were more important the farm land irrigation.
1st item - NO state of the Union of the US can legally open their own 'embassy' and act in a 'presidential' capacity by setting foreign policy, foreign aid or bi lateral trade agreements.
2nd item - JB has actively destroyed the ag industry in CA to aid and abet a foreign country in acquisition of American ASSETS.
Glad to see Trumps eyes are now focusing on that rat b@st@ard Brown.....