> One of the biggest mass deportations in US history was directed by Eisenhower

About a quarter of a million, hardly the biggest .. and importantly this was at the request of the Mexican Government who wanted many of the Mexican workers who entered the USofA to be returned to work in Mexico.

Despite the derogatory name https://en.wikipedia.org/wiki/Operation_Wetback was a attempt to appease the Mexican Government and get their continued support to provide "legal" Mexican labour to the USofA.