Local and state governments cooperate, and national and multinational agencies do also.
Anthony Kimery at Biometric Update:
“The Department of Homeland Security (DHS) and the Caribbean Community’s (CARICOM) regional security agency, Implementation Agency for Crime and Security (IMPACS), signed an agreement to create the first multilateral biometric information sharing arrangement established by DHS, extending U.S. immigration vetting and border security checks across participating Caribbean countries.”
Because once someone has data, there is no TECHNICAL reason why they can’t share it with anyone else.
Bredemarket 