The Junkers didn’t just make a noble attempt at tyrannicide in 1944; according to Exceptional People, Imperial Germany’s landed nobility were also good on immigration:

Faced by labor shortages because of Germany’s economic boom, Prussian landlords recruited Poles and Ukrainians to work as replacement agricultural workers.  In 1885, due to concern that Polish settlement in the eastern provinces could weaken German control, the Prussian frontier was closed and about 40,000 Poles were deported – despite the protests of the landowners, who lost up to two-thirds of their labor force.

If only California’s landowners had as much sense.