Walker had traveled to Guaymas in the…
October 1853 CE
He said the colony would serve as a fortified frontier, protecting United States soil from Indian raids.
Mexico had refused, and Walker has returned to San Francisco determined to obtain his colony, regardless of Mexico's position.
He begins recruiting American supporters of slavery and Manifest Destiny doctrine, mostly inhabitants of Kentucky and Tennessee.
His plans now expand from forming a buffer colony to establishing an independent Republic of Sonora, which might eventually take its place as a part of the American Union as the Republic of Texas had done.
He funds his project by selling scrips that are redeemable in lands of Sonora.