The former FBI executives who signed a letter to Congress have more than 250 years of combined experience in the bureau’s intelligence, counterterrorism, and criminal operations and served under seven former presidents and four different FBI directors.
In part, the warning reads,
“In its modern history the U.S. has never suffered an invasion of the homeland and, yet, one is unfolding now,” the FBI agents wrote. “Military aged men from across the globe, many from countries or regions not friendly to the United States, are landing in waves on our soil by the thousands - not by splashing ashore from a ship or parachuting from a plane but rather by foot across a border that has been accurately advertised around the world as largely unprotected with ready access granted.”
“It would be difficult to overstate the danger represented by the presence inside our borders of what is comparatively a multi-division army of young single adult males from hostile nations and regions whose background, intent, or allegiance is completely unknown.”
“Any violation of the nation's immigration laws increases risks, but the surge in numbers of single military-aged males descending upon American cities and towns is alarming and perilous.”
“Additionally, they are not just from terror-linked regions, but from China and Russia as well as hostile adversaries of the U.S. with aspirations to devastate national infrastructure.”
"In the discussions to which this interest has given rise and in the arrangements by which they may terminate the occasion has been judged proper for asserting, as a principle in which the rights and interests of the United States are involved, that the American continents, by the free and independent condition which they have assumed and maintain, are henceforth not to be considered as subjects for future colonization by any European powers. "
-- James Monroe, speech to the US Congress on December 2, 1823